51040232 has 32 divisors (see below), whose sum is σ = 104220000. Its totient is φ = 23341248.

The previous prime is 51040217. The next prime is 51040259. The reversal of 51040232 is 23204015.

It is a super-2 number, since 2×51040232² = 5210210565227648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51040232.

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, 1382 + ... + 10197.

It is an arithmetic number, because the mean of its divisors is an integer number (3256875).

Almost surely, 2^51040232 is an apocalyptic number.

It is an amenable number.

51040232 is an abundant number, since it is smaller than the sum of its proper divisors (53179768).

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

51040232 is a wasteful number, since it uses less digits than its factorization.

51040232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11633 (or 11629 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51040232 is about 7144.2446766611. The cubic root of 51040232 is about 370.9404660322.

Adding to 51040232 its reverse (23204015), we get a palindrome (74244247).

The spelling of 51040232 in words is "fifty-one million, forty thousand, two hundred thirty-two".