51522530 has 16 divisors (see below), whose sum is σ = 96773184. Its totient is φ = 19712880.

The previous prime is 51522511. The next prime is 51522587. The reversal of 51522530 is 3522515.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 51522496 and 51522505.

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, 111776 + ... + 112235.

It is an arithmetic number, because the mean of its divisors is an integer number (6048324).

Almost surely, 2^51522530 is an apocalyptic number.

51522530 is a deficient number, since it is larger than the sum of its proper divisors (45250654).

51522530 is a wasteful number, since it uses less digits than its factorization.

51522530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224041.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 51522530 is about 7177.9196150417. The cubic root of 51522530 is about 372.1051895462.

The spelling of 51522530 in words is "fifty-one million, five hundred twenty-two thousand, five hundred thirty".