51007957 has 16 divisors (see below), whose sum is σ = 68487552. Its totient is φ = 36688320.

The previous prime is 51007949. The next prime is 51007961. The reversal of 51007957 is 75970015.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51007957 - 2³ = 51007949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51007907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24478 + ... + 26479.

It is an arithmetic number, because the mean of its divisors is an integer number (4280472).

Almost surely, 2^51007957 is an apocalyptic number.

It is an amenable number.

51007957 is a deficient number, since it is larger than the sum of its proper divisors (17479595).

51007957 is a wasteful number, since it uses less digits than its factorization.

51007957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50988.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 51007957 is about 7141.9855082463. The cubic root of 51007957 is about 370.8622621823.

The spelling of 51007957 in words is "fifty-one million, seven thousand, nine hundred fifty-seven".