997024551 has 16 divisors (see below), whose sum is σ = 1413727200. Its totient is φ = 622844928.

The previous prime is 997024543. The next prime is 997024571. The reversal of 997024551 is 155420799.

It is not a de Polignac number, because 997024551 - 2³ = 997024543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997024571) 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, 31006 + ... + 54363.

It is an arithmetic number, because the mean of its divisors is an integer number (88357950).

Almost surely, 2^997024551 is an apocalyptic number.

997024551 is a deficient number, since it is larger than the sum of its proper divisors (416702649).

997024551 is a wasteful number, since it uses less digits than its factorization.

997024551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85618.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 997024551 is about 31575.6955742862. The cubic root of 997024551 is about 999.0071983377.

The spelling of 997024551 in words is "nine hundred ninety-seven million, twenty-four thousand, five hundred fifty-one".