51522580 has 24 divisors (see below), whose sum is σ = 114562728. Its totient is φ = 19396608.

The previous prime is 51522511. The next prime is 51522587. The reversal of 51522580 is 8522515.

It can be written as a sum of positive squares in 4 ways, for example, as 13527684 + 37994896 = 3678^2 + 6164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522587) 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, 75429 + ... + 76108.

It is an arithmetic number, because the mean of its divisors is an integer number (4773447).

Almost surely, 2^51522580 is an apocalyptic number.

It is an amenable number.

51522580 is an abundant number, since it is smaller than the sum of its proper divisors (63040148).

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

51522580 is a wasteful number, since it uses less digits than its factorization.

51522580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151563 (or 151561 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 51522580 is about 7177.9230979441. The cubic root of 51522580 is about 372.1053099159.

The spelling of 51522580 in words is "fifty-one million, five hundred twenty-two thousand, five hundred eighty".