51336460 has 96 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 16566528.

The previous prime is 51336457. The next prime is 51336473. The reversal of 51336460 is 6463315.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344466 + ... + 344614.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^51336460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51336460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65318400).

51336460 is an abundant number, since it is smaller than the sum of its proper divisors (79300340).

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

51336460 is a wasteful number, since it uses less digits than its factorization.

51336460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 51336460 is about 7164.9466152931. The cubic root of 51336460 is about 371.6567052994.

Adding to 51336460 its reverse (6463315), we get a palindrome (57799775).

The spelling of 51336460 in words is "fifty-one million, three hundred thirty-six thousand, four hundred sixty".