51550624 has 12 divisors (see below), whose sum is σ = 101490354. Its totient is φ = 25775296.

The previous prime is 51550621. The next prime is 51550633. The reversal of 51550624 is 42605515.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 1140624 = 7100^2 + 1068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51550592 and 51550601.

It is not an unprimeable number, because it can be changed into a prime (51550621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805447 + ... + 805510.

Almost surely, 2^51550624 is an apocalyptic number.

It is an amenable number.

51550624 is a deficient number, since it is larger than the sum of its proper divisors (49939730).

51550624 is a wasteful number, since it uses less digits than its factorization.

51550624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610967 (or 1610959 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 51550624 is about 7179.8763220546. The cubic root of 51550624 is about 372.1728106023.

The spelling of 51550624 in words is "fifty-one million, five hundred fifty thousand, six hundred twenty-four".