51284624 has 10 divisors (see below), whose sum is σ = 99363990. Its totient is φ = 25642304.

The previous prime is 51284603. The next prime is 51284647. The reversal of 51284624 is 42648215.

It can be written as a sum of positive squares in only one way, i.e., 36385024 + 14899600 = 6032^2 + 3860^2 .

It is a super-2 number, since 2×51284624² = 5260225317642752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602629 + ... + 1602660.

It is an arithmetic number, because the mean of its divisors is an integer number (9936399).

Almost surely, 2^51284624 is an apocalyptic number.

It is an amenable number.

51284624 is a deficient number, since it is larger than the sum of its proper divisors (48079366).

51284624 is a wasteful number, since it uses less digits than its factorization.

51284624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205297 (or 3205291 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 51284624 is about 7161.3283683965. The cubic root of 51284624 is about 371.5315721105.

The spelling of 51284624 in words is "fifty-one million, two hundred eighty-four thousand, six hundred twenty-four".