51072152 has 32 divisors (see below), whose sum is σ = 101247600. Its totient is φ = 24084864.

The previous prime is 51072139. The next prime is 51072169. The reversal of 51072152 is 25127015.

It is a happy number.

It is a super-2 number, since 2×51072152² = 5216729419822208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41498 + ... + 42710.

Almost surely, 2^51072152 is an apocalyptic number.

It is an amenable number.

51072152 is a deficient number, since it is larger than the sum of its proper divisors (50175448).

51072152 is a wasteful number, since it uses less digits than its factorization.

51072152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51072152 is about 7146.4782935373. The cubic root of 51072152 is about 371.0177772811.

Adding to 51072152 its reverse (25127015), we get a palindrome (76199167).

The spelling of 51072152 in words is "fifty-one million, seventy-two thousand, one hundred fifty-two".