51589625 has 8 divisors (see below), whose sum is σ = 64384008. Its totient is φ = 41271600.

The previous prime is 51589619. The next prime is 51589631. The reversal of 51589625 is 52698515.

It is an interprime number because it is at equal distance from previous prime (51589619) and next prime (51589631).

It can be written as a sum of positive squares in 4 ways, for example, as 724201 + 50865424 = 851^2 + 7132^2 .

It is not a de Polignac number, because 51589625 - 2⁶ = 51589561 is a prime.

It is a super-2 number, since 2×51589625² = 5322978815281250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206234 + ... + 206483.

It is an arithmetic number, because the mean of its divisors is an integer number (8048001).

Almost surely, 2^51589625 is an apocalyptic number.

It is an amenable number.

51589625 is a deficient number, since it is larger than the sum of its proper divisors (12794383).

51589625 is an equidigital number, since it uses as much as digits as its factorization.

51589625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412732 (or 412722 counting only the distinct ones).

The product of its digits is 108000, while the sum is 41.

The square root of 51589625 is about 7182.5918024067. The cubic root of 51589625 is about 372.2666436263.

The spelling of 51589625 in words is "fifty-one million, five hundred eighty-nine thousand, six hundred twenty-five".