15552000 has 240 divisors, whose sum is σ = 58090032. Its totient is φ = 4147200.

The previous prime is 15551999. The next prime is 15552001. The reversal of 15552000 is 25551.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (15551999) and next prime (15552001).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15552001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3110398 + ... + 3110402.

Almost surely, 2^15552000 is an apocalyptic number.

15552000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29045016).

15552000 is an abundant number, since it is smaller than the sum of its proper divisors (42538032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15552000 is an frugal number, since it uses more digits than its factorization.

15552000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 15552000 is about 3943.6024140372. The cubic root of 15552000 is about 249.6100587662.

Adding to 15552000 its reverse (25551), we get a palindrome (15577551).

The spelling of 15552000 in words is "fifteen million, five hundred fifty-two thousand".