997056533 has 4 divisors (see below), whose sum is σ = 1087698048. Its totient is φ = 906415020.

The previous prime is 997056527. The next prime is 997056563. The reversal of 997056533 is 335650799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 997056533 - 2¹⁶ = 996990997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997056563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45320741 + ... + 45320762.

It is an arithmetic number, because the mean of its divisors is an integer number (271924512).

Almost surely, 2^997056533 is an apocalyptic number.

It is an amenable number.

997056533 is a deficient number, since it is larger than the sum of its proper divisors (90641515).

997056533 is a wasteful number, since it uses less digits than its factorization.

997056533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90641514.

The product of its (nonzero) digits is 765450, while the sum is 47.

The square root of 997056533 is about 31576.2020040410. The cubic root of 997056533 is about 999.0178800896.

The spelling of 997056533 in words is "nine hundred ninety-seven million, fifty-six thousand, five hundred thirty-three".