51522412 has 24 divisors (see below), whose sum is σ = 91576800. Its totient is φ = 25361280.

The previous prime is 51522409. The next prime is 51522439. The reversal of 51522412 is 21422515.

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, 81337 + ... + 81967.

It is an arithmetic number, because the mean of its divisors is an integer number (3815700).

Almost surely, 2^51522412 is an apocalyptic number.

It is an amenable number.

51522412 is a deficient number, since it is larger than the sum of its proper divisors (40054388).

51522412 is a wasteful number, since it uses less digits than its factorization.

51522412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 51522412 is about 7177.9113953852. The cubic root of 51522412 is about 372.1049054734.

Adding to 51522412 its reverse (21422515), we get a palindrome (72944927).

The spelling of 51522412 in words is "fifty-one million, five hundred twenty-two thousand, four hundred twelve".