51125204 has 18 divisors (see below), whose sum is σ = 96882030. Its totient is φ = 23595936.

The previous prime is 51125201. The next prime is 51125279. The reversal of 51125204 is 40252115.

It can be written as a sum of positive squares in 3 ways, for example, as 7300804 + 43824400 = 2702^2 + 6620^2 .

It is a super-2 number, since 2×51125204² = 5227572968083232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51125201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37139 + ... + 38490.

It is an arithmetic number, because the mean of its divisors is an integer number (5382335).

Almost surely, 2^51125204 is an apocalyptic number.

It is an amenable number.

51125204 is a deficient number, since it is larger than the sum of its proper divisors (45756826).

51125204 is a wasteful number, since it uses less digits than its factorization.

51125204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75659 (or 75644 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51125204 is about 7150.1890884088. The cubic root of 51125204 is about 371.1461996722.

Adding to 51125204 its reverse (40252115), we get a palindrome (91377319).

The spelling of 51125204 in words is "fifty-one million, one hundred twenty-five thousand, two hundred four".