51455204 has 6 divisors (see below), whose sum is σ = 90046614. Its totient is φ = 25727600.

The previous prime is 51455189. The next prime is 51455221. The reversal of 51455204 is 40255415.

It can be written as a sum of positive squares in only one way, i.e., 43033600 + 8421604 = 6560^2 + 2902^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6431897 + ... + 6431904.

It is an arithmetic number, because the mean of its divisors is an integer number (15007769).

Almost surely, 2^51455204 is an apocalyptic number.

It is an amenable number.

51455204 is a deficient number, since it is larger than the sum of its proper divisors (38591410).

51455204 is a wasteful number, since it uses less digits than its factorization.

51455204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12863805 (or 12863803 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 51455204 is about 7173.2282829978. The cubic root of 51455204 is about 371.9430386442.

The spelling of 51455204 in words is "fifty-one million, four hundred fifty-five thousand, two hundred four".