56250000 has 135 divisors (see below), whose sum is σ = 196777243. Its totient is φ = 15000000.

The previous prime is 56249981. The next prime is 56250011. The reversal of 56250000 is 5265.

The square root of 56250000 is 7500.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 39992976 + 16257024 = 6324^2 + 4032^2 .

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11249998 + ... + 11250002.

Almost surely, 2^56250000 is an apocalyptic number.

56250000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56250000 is the 7500-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56250000

56250000 is an abundant number, since it is smaller than the sum of its proper divisors (140527243).

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

56250000 is an frugal number, since it uses more digits than its factorization.

56250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The cubic root of 56250000 is about 383.1547161968.

Adding to 56250000 its reverse (5265), we get a palindrome (56255265).

The spelling of 56250000 in words is "fifty-six million, two hundred fifty thousand".