7124565520 has 20 divisors (see below), whose sum is σ = 16564615020. Its totient is φ = 2849826176.

The previous prime is 7124565493. The next prime is 7124565571. The reversal of 7124565520 is 255654217.

It can be written as a sum of positive squares in 2 ways, for example, as 5693607936 + 1430957584 = 75456^2 + 37828^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 7124565520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44528455 + ... + 44528614.

It is an arithmetic number, because the mean of its divisors is an integer number (828230751).

Almost surely, 2^7124565520 is an apocalyptic number.

It is an amenable number.

7124565520 is an abundant number, since it is smaller than the sum of its proper divisors (9440049500).

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

7124565520 is a wasteful number, since it uses less digits than its factorization.

7124565520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89057082 (or 89057076 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 7124565520 is about 84407.1414040305. The cubic root of 7124565520 is about 1924.2114514686.

The spelling of 7124565520 in words is "seven billion, one hundred twenty-four million, five hundred sixty-five thousand, five hundred twenty".