523192972521 has 8 divisors (see below), whose sum is σ = 698408441920. Its totient is φ = 348386409072.

The previous prime is 523192972499. The next prime is 523192972567. The reversal of 523192972521 is 125279291325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523192972521 - 2⁶ = 523192972457 is a prime.

It is a super-2 number, since 2×523192972521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523192972571) 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, 102223501 + ... + 102228618.

It is an arithmetic number, because the mean of its divisors is an integer number (87301055240).

Almost surely, 2^523192972521 is an apocalyptic number.

It is an amenable number.

523192972521 is a deficient number, since it is larger than the sum of its proper divisors (175215469399).

523192972521 is a wasteful number, since it uses less digits than its factorization.

523192972521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204452975.

The product of its digits is 680400, while the sum is 48.

The spelling of 523192972521 in words is "five hundred twenty-three billion, one hundred ninety-two million, nine hundred seventy-two thousand, five hundred twenty-one".