51250904 has 32 divisors (see below), whose sum is σ = 101790000. Its totient is φ = 24124032.

The previous prime is 51250897. The next prime is 51250907. The reversal of 51250904 is 40905215.

51250904 = T₄₂₂ + T₄₂₃ + ... + T₇₂₅.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51250907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25322 + ... + 27270.

Almost surely, 2^51250904 is an apocalyptic number.

It is an amenable number.

51250904 is a deficient number, since it is larger than the sum of its proper divisors (50539096).

51250904 is a wasteful number, since it uses less digits than its factorization.

51250904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 51250904 is about 7158.9736694585. The cubic root of 51250904 is about 371.4501260526.

The spelling of 51250904 in words is "fifty-one million, two hundred fifty thousand, nine hundred four".