51553204 has 6 divisors (see below), whose sum is σ = 90218114. Its totient is φ = 25776600.

The previous prime is 51553193. The next prime is 51553211. The reversal of 51553204 is 40235515.

It can be written as a sum of positive squares in only one way, i.e., 49730704 + 1822500 = 7052^2 + 1350^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444147 + ... + 6444154.

Almost surely, 2^51553204 is an apocalyptic number.

It is an amenable number.

51553204 is a deficient number, since it is larger than the sum of its proper divisors (38664910).

51553204 is a wasteful number, since it uses less digits than its factorization.

51553204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888305 (or 12888303 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 51553204 is about 7180.0559886396. The cubic root of 51553204 is about 372.1790193201.

Adding to 51553204 its reverse (40235515), we get a palindrome (91788719).

The spelling of 51553204 in words is "fifty-one million, five hundred fifty-three thousand, two hundred four".