51992087 has 12 divisors (see below), whose sum is σ = 60643440. Its totient is φ = 44444736.

The previous prime is 51992071. The next prime is 51992089. The reversal of 51992087 is 78029915.

51992087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51992087 - 2⁴ = 51992071 is a prime.

It is a super-2 number, since 2×51992087² = 5406354221231138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51992089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20303 + ... + 22719.

It is an arithmetic number, because the mean of its divisors is an integer number (5053620).

Almost surely, 2^51992087 is an apocalyptic number.

51992087 is a deficient number, since it is larger than the sum of its proper divisors (8651353).

51992087 is a wasteful number, since it uses less digits than its factorization.

51992087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870 (or 2863 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 51992087 is about 7210.5538622217. The cubic root of 51992087 is about 373.2321817977.

The spelling of 51992087 in words is "fifty-one million, nine hundred ninety-two thousand, eighty-seven".