51522939 has 32 divisors (see below), whose sum is σ = 82689600. Its totient is φ = 31518720.

The previous prime is 51522929. The next prime is 51522953. The reversal of 51522939 is 93922515.

It is a happy number.

It is not a de Polignac number, because 51522939 - 2⁴ = 51522923 is a prime.

It is a super-2 number, since 2×51522939² = 5309226486395442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51522929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80059 + ... + 80699.

It is an arithmetic number, because the mean of its divisors is an integer number (2584050).

Almost surely, 2^51522939 is an apocalyptic number.

51522939 is a deficient number, since it is larger than the sum of its proper divisors (31166661).

51522939 is a wasteful number, since it uses less digits than its factorization.

51522939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 886 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 51522939 is about 7177.9481051342. The cubic root of 51522939 is about 372.1061741680.

The spelling of 51522939 in words is "fifty-one million, five hundred twenty-two thousand, nine hundred thirty-nine".