51957889 has 12 divisors (see below), whose sum is σ = 54420784. Its totient is φ = 49578984.

The previous prime is 51957887. The next prime is 51957901. The reversal of 51957889 is 98875915.

It is not a de Polignac number, because 51957889 - 2¹ = 51957887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51957881) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94714 + ... + 95260.

Almost surely, 2^51957889 is an apocalyptic number.

It is an amenable number.

51957889 is a deficient number, since it is larger than the sum of its proper divisors (2462895).

51957889 is an equidigital number, since it uses as much as digits as its factorization.

51957889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 637 counting only the distinct ones).

The product of its digits is 907200, while the sum is 52.

The square root of 51957889 is about 7208.1820870452. The cubic root of 51957889 is about 373.1503322036.

The spelling of 51957889 in words is "fifty-one million, nine hundred fifty-seven thousand, eight hundred eighty-nine".