51502422 has 16 divisors (see below), whose sum is σ = 104694192. Its totient is φ = 16885920.

The previous prime is 51502411. The next prime is 51502447. The reversal of 51502422 is 22420515.

It is a happy number.

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, 69993 + ... + 70724.

It is an arithmetic number, because the mean of its divisors is an integer number (6543387).

Almost surely, 2^51502422 is an apocalyptic number.

51502422 is an abundant number, since it is smaller than the sum of its proper divisors (53191770).

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

51502422 is a wasteful number, since it uses less digits than its factorization.

51502422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140783.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 51502422 is about 7176.5187939557. The cubic root of 51502422 is about 372.0567753557.

Adding to 51502422 its reverse (22420515), we get a palindrome (73922937).

The spelling of 51502422 in words is "fifty-one million, five hundred two thousand, four hundred twenty-two".