51224652 has 18 divisors (see below), whose sum is σ = 129484628. Its totient is φ = 17074872.

The previous prime is 51224647. The next prime is 51224669. The reversal of 51224652 is 25642215.

51224652 is a `hidden beast` number, since 5 + 1 + 2 + 2 + 4 + 652 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×51224652² = 5247929945042208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711418 + ... + 711489.

Almost surely, 2^51224652 is an apocalyptic number.

It is an amenable number.

51224652 is an abundant number, since it is smaller than the sum of its proper divisors (78259976).

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

51224652 is a wasteful number, since it uses less digits than its factorization.

51224652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422917 (or 1422912 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51224652 is about 7157.1399315648. The cubic root of 51224652 is about 371.3866931933.

Adding to 51224652 its reverse (25642215), we get a palindrome (76866867).

The spelling of 51224652 in words is "fifty-one million, two hundred twenty-four thousand, six hundred fifty-two".