974126521 has 15 divisors (see below), whose sum is σ = 1035958501. Its totient is φ = 915980428.

The previous prime is 974126509. The next prime is 974126563. The reversal of 974126521 is 125621479.

The square root of 974126521 is 31211.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 974126521 - 2⁷ = 974126393 is a prime.

It is a Duffinian number.

Its product of digits (30240) is a multiple of the sum of its prime factors (210).

It is not an unprimeable number, because it can be changed into a prime (974127521) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16510590 + ... + 16510648.

Almost surely, 2^974126521 is an apocalyptic number.

974126521 is the 31211-st square number.

974126521 is the 15606-th centered octagonal number.

It is an amenable number.

974126521 is a deficient number, since it is larger than the sum of its proper divisors (61831980).

974126521 is an frugal number, since it uses more digits than its factorization.

974126521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 82 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The cubic root of 974126521 is about 991.3000371445.

The spelling of 974126521 in words is "nine hundred seventy-four million, one hundred twenty-six thousand, five hundred twenty-one".