51460000 has 120 divisors (see below), whose sum is σ = 132257664. Its totient is φ = 19680000.

The previous prime is 51459997. The next prime is 51460001. The reversal of 51460000 is 6415.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (51460001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 619959 + ... + 620041.

Almost surely, 2^51460000 is an apocalyptic number.

51460000 is a gapful number since it is divisible by the number (50) 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 51460000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66128832).

51460000 is an abundant number, since it is smaller than the sum of its proper divisors (80797664).

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

51460000 is an equidigital number, since it uses as much as digits as its factorization.

51460000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 51460000 is about 7173.5625737844. The cubic root of 51460000 is about 371.9545942191.

Adding to 51460000 its reverse (6415), we get a palindrome (51466415).

The spelling of 51460000 in words is "fifty-one million, four hundred sixty thousand".