51325636 has 12 divisors (see below), whose sum is σ = 89935020. Its totient is φ = 25629920.

The previous prime is 51325619. The next prime is 51325649. The reversal of 51325636 is 63652315.

It can be written as a sum of positive squares in 2 ways, for example, as 38365636 + 12960000 = 6194^2 + 3600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51325598 and 51325607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4531 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (7494585).

Almost surely, 2^51325636 is an apocalyptic number.

It is an amenable number.

51325636 is a deficient number, since it is larger than the sum of its proper divisors (38609384).

51325636 is a wasteful number, since it uses less digits than its factorization.

51325636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16454 (or 16452 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 51325636 is about 7164.1912313952. The cubic root of 51325636 is about 371.6305828974.

The spelling of 51325636 in words is "fifty-one million, three hundred twenty-five thousand, six hundred thirty-six".