51224438 has 16 divisors (see below), whose sum is σ = 79005696. Its totient is φ = 24895080.

The previous prime is 51224429. The next prime is 51224443. The reversal of 51224438 is 83442215.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51224438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17843 + ... + 20513.

It is an arithmetic number, because the mean of its divisors is an integer number (4937856).

Almost surely, 2^51224438 is an apocalyptic number.

51224438 is a deficient number, since it is larger than the sum of its proper divisors (27781258).

51224438 is a wasteful number, since it uses less digits than its factorization.

51224438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939.

The product of its digits is 7680, while the sum is 29.

The square root of 51224438 is about 7157.1249814433. The cubic root of 51224438 is about 371.3861760149.

The spelling of 51224438 in words is "fifty-one million, two hundred twenty-four thousand, four hundred thirty-eight".