51131152 has 20 divisors (see below), whose sum is σ = 102263296. Its totient is φ = 24740640.

The previous prime is 51131131. The next prime is 51131207. The reversal of 51131152 is 25113115.

51131152 is an admirable number.

It is a super-2 number, since 2×51131152² = 5228789409694208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51048 + ... + 52039.

Almost surely, 2^51131152 is an apocalyptic number.

It is an amenable number.

51131152 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51131152 is a wasteful number, since it uses less digits than its factorization.

51131152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103126 (or 103120 counting only the distinct ones).

The product of its digits is 150, while the sum is 19.

The square root of 51131152 is about 7150.6050093681. The cubic root of 51131152 is about 371.1605923905.

Adding to 51131152 its reverse (25113115), we get a palindrome (76244267).

The spelling of 51131152 in words is "fifty-one million, one hundred thirty-one thousand, one hundred fifty-two".