51337625 has 8 divisors (see below), whose sum is σ = 64069512. Its totient is φ = 41070000.

The previous prime is 51337621. The next prime is 51337631. The reversal of 51337625 is 52673315.

It can be written as a sum of positive squares in 4 ways, for example, as 3948169 + 47389456 = 1987^2 + 6884^2 .

It is not a de Polignac number, because 51337625 - 2² = 51337621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51337591 and 51337600.

It is not an unprimeable number, because it can be changed into a prime (51337621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205226 + ... + 205475.

It is an arithmetic number, because the mean of its divisors is an integer number (8008689).

Almost surely, 2^51337625 is an apocalyptic number.

It is an amenable number.

51337625 is a deficient number, since it is larger than the sum of its proper divisors (12731887).

51337625 is an equidigital number, since it uses as much as digits as its factorization.

51337625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410716 (or 410706 counting only the distinct ones).

The product of its digits is 18900, while the sum is 32.

The square root of 51337625 is about 7165.0279134139. The cubic root of 51337625 is about 371.6595166657.

The spelling of 51337625 in words is "fifty-one million, three hundred thirty-seven thousand, six hundred twenty-five".