520992144 has 60 divisors (see below), whose sum is σ = 1459867500. Its totient is φ = 173448192.

The previous prime is 520992119. The next prime is 520992151. The reversal of 520992144 is 441299025.

520992144 is a `hidden beast` number, since 520 + 9 + 92 + 1 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 199148544 + 321843600 = 14112^2 + 17940^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 520992099 and 520992108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149332 + ... + 152780.

It is an arithmetic number, because the mean of its divisors is an integer number (24331125).

Almost surely, 2^520992144 is an apocalyptic number.

It is an amenable number.

520992144 is an abundant number, since it is smaller than the sum of its proper divisors (938875356).

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

520992144 is a wasteful number, since it uses less digits than its factorization.

520992144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512 (or 4503 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 520992144 is about 22825.2523315735. The cubic root of 520992144 is about 804.6562548680.

The spelling of 520992144 in words is "five hundred twenty million, nine hundred ninety-two thousand, one hundred forty-four".