51204272 has 40 divisors (see below), whose sum is σ = 120054816. Its totient is φ = 20653056.

The previous prime is 51204269. The next prime is 51204301. The reversal of 51204272 is 27240215.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11543 + ... + 15350.

Almost surely, 2^51204272 is an apocalyptic number.

It is an amenable number.

51204272 is an abundant number, since it is smaller than the sum of its proper divisors (68850544).

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

51204272 is a wasteful number, since it uses less digits than its factorization.

51204272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26925 (or 26919 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 51204272 is about 7155.7160368477. The cubic root of 51204272 is about 371.3374339370.

Adding to 51204272 its reverse (27240215), we get a palindrome (78444487).

The spelling of 51204272 in words is "fifty-one million, two hundred four thousand, two hundred seventy-two".