973515561 has 16 divisors (see below), whose sum is σ = 1327047744. Its totient is φ = 634639104.

The previous prime is 973515527. The next prime is 973515563. The reversal of 973515561 is 165515379.

It is not a de Polignac number, because 973515561 - 2⁶ = 973515497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (973515563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9861 + ... + 45213.

It is an arithmetic number, because the mean of its divisors is an integer number (82940484).

Almost surely, 2^973515561 is an apocalyptic number.

It is an amenable number.

973515561 is a deficient number, since it is larger than the sum of its proper divisors (353532183).

973515561 is a wasteful number, since it uses less digits than its factorization.

973515561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35560.

The product of its digits is 141750, while the sum is 42.

The square root of 973515561 is about 31201.2108899639. The cubic root of 973515561 is about 991.0927501308.

The spelling of 973515561 in words is "nine hundred seventy-three million, five hundred fifteen thousand, five hundred sixty-one".