51522872 has 8 divisors (see below), whose sum is σ = 96605400. Its totient is φ = 25761432.

The previous prime is 51522853. The next prime is 51522881. The reversal of 51522872 is 27822515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220172 + ... + 3220187.

It is an arithmetic number, because the mean of its divisors is an integer number (12075675).

Almost surely, 2^51522872 is an apocalyptic number.

It is an amenable number.

51522872 is a deficient number, since it is larger than the sum of its proper divisors (45082528).

51522872 is a wasteful number, since it uses less digits than its factorization.

51522872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440365 (or 6440361 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 51522872 is about 7177.9434380608. The cubic root of 51522872 is about 372.1060128733.

The spelling of 51522872 in words is "fifty-one million, five hundred twenty-two thousand, eight hundred seventy-two".