51533522 has 16 divisors (see below), whose sum is σ = 81829440. Its totient is φ = 24298512.

The previous prime is 51533507. The next prime is 51533527. The reversal of 51533522 is 22533515.

It is a junction number, because it is equal to n+sod(n) for n = 51533491 and 51533500.

It is not an unprimeable number, because it can be changed into a prime (51533527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7838 + ... + 12825.

It is an arithmetic number, because the mean of its divisors is an integer number (5114340).

Almost surely, 2^51533522 is an apocalyptic number.

51533522 is a deficient number, since it is larger than the sum of its proper divisors (30295918).

51533522 is a wasteful number, since it uses less digits than its factorization.

51533522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20737.

The product of its digits is 4500, while the sum is 26.

The square root of 51533522 is about 7178.6852556718. The cubic root of 51533522 is about 372.1316497466.

The spelling of 51533522 in words is "fifty-one million, five hundred thirty-three thousand, five hundred twenty-two".