51272460 has 48 divisors (see below), whose sum is σ = 159516000. Its totient is φ = 13672512.

The previous prime is 51272453. The next prime is 51272461. The reversal of 51272460 is 6427215.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51272461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46935 + ... + 48014.

It is an arithmetic number, because the mean of its divisors is an integer number (3323250).

Almost surely, 2^51272460 is an apocalyptic number.

It is an amenable number.

51272460 is an abundant number, since it is smaller than the sum of its proper divisors (108243540).

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

51272460 is a wasteful number, since it uses less digits than its factorization.

51272460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94967 (or 94959 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 51272460 is about 7160.4790342546. The cubic root of 51272460 is about 371.5021957462.

Adding to 51272460 its reverse (6427215), we get a palindrome (57699675).

The spelling of 51272460 in words is "fifty-one million, two hundred seventy-two thousand, four hundred sixty".