51572004 has 48 divisors (see below), whose sum is σ = 138190080. Its totient is φ = 14804640.

The previous prime is 51571963. The next prime is 51572041. The reversal of 51572004 is 40027515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7774 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (2878960).

Almost surely, 2^51572004 is an apocalyptic number.

It is an amenable number.

51572004 is an abundant number, since it is smaller than the sum of its proper divisors (86618076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51572004 is a wasteful number, since it uses less digits than its factorization.

51572004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20600 (or 20598 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51572004 is about 7181.3650512977. The cubic root of 51572004 is about 372.2242548869.

Adding to 51572004 its reverse (40027515), we get a palindrome (91599519).

The spelling of 51572004 in words is "fifty-one million, five hundred seventy-two thousand, four".