51567957 has 48 divisors (see below), whose sum is σ = 91087360. Its totient is φ = 27457056.

The previous prime is 51567937. The next prime is 51567959. The reversal of 51567957 is 75976515.

It is a happy number.

It is not a de Polignac number, because 51567957 - 2¹⁴ = 51551573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51567959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79878 + ... + 80520.

Almost surely, 2^51567957 is an apocalyptic number.

51567957 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51567957 is a deficient number, since it is larger than the sum of its proper divisors (39519403).

51567957 is a wasteful number, since it uses less digits than its factorization.

51567957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 739 counting only the distinct ones).

The product of its digits is 330750, while the sum is 45.

The square root of 51567957 is about 7181.0832748270. The cubic root of 51567957 is about 372.2145181379.

The spelling of 51567957 in words is "fifty-one million, five hundred sixty-seven thousand, nine hundred fifty-seven".