51347152 has 20 divisors (see below), whose sum is σ = 99611680. Its totient is φ = 25640928.

The previous prime is 51347147. The next prime is 51347159. The reversal of 51347152 is 25174315.

It is a happy number.

It is a super-2 number, since 2×51347152² = 5273060037022208, 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 51347152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51347159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15499 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (4980584).

Almost surely, 2^51347152 is an apocalyptic number.

It is an amenable number.

51347152 is a deficient number, since it is larger than the sum of its proper divisors (48264528).

51347152 is a wasteful number, since it uses less digits than its factorization.

51347152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090 (or 4084 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 51347152 is about 7165.6927090129. The cubic root of 51347152 is about 371.6825055309.

The spelling of 51347152 in words is "fifty-one million, three hundred forty-seven thousand, one hundred fifty-two".