51247224 has 48 divisors (see below), whose sum is σ = 158623920. Its totient is φ = 14641920.

The previous prime is 51247219. The next prime is 51247267. The reversal of 51247224 is 42274215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50337 + ... + 51344.

It is an arithmetic number, because the mean of its divisors is an integer number (3304665).

Almost surely, 2^51247224 is an apocalyptic number.

It is an amenable number.

51247224 is an abundant number, since it is smaller than the sum of its proper divisors (107376696).

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

51247224 is a wasteful number, since it uses less digits than its factorization.

51247224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700 (or 101693 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 51247224 is about 7158.7166447625. The cubic root of 51247224 is about 371.4412353529.

The spelling of 51247224 in words is "fifty-one million, two hundred forty-seven thousand, two hundred twenty-four".