513157572 has 24 divisors (see below), whose sum is σ = 1330408800. Its totient is φ = 171052488.

The previous prime is 513157511. The next prime is 513157573. The reversal of 513157572 is 275751315.

It is a happy number.

513157572 is a `hidden beast` number, since 5 + 1 + 31 + 57 + 572 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (513157573) 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, 2375622 + ... + 2375837.

It is an arithmetic number, because the mean of its divisors is an integer number (55433700).

Almost surely, 2^513157572 is an apocalyptic number.

It is an amenable number.

513157572 is an abundant number, since it is smaller than the sum of its proper divisors (817251228).

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

513157572 is a wasteful number, since it uses less digits than its factorization.

513157572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751472 (or 4751464 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 513157572 is about 22652.9815256182. The cubic root of 513157572 is about 800.6024482895.

The spelling of 513157572 in words is "five hundred thirteen million, one hundred fifty-seven thousand, five hundred seventy-two".