972557 has 2 divisors, whose sum is σ = 972558. Its totient is φ = 972556.

The previous prime is 972533. The next prime is 972577. The reversal of 972557 is 755279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972196 + 361 = 986^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 972557 - 2⁶ = 972493 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 972557.

It is not a weakly prime, because it can be changed into another prime (972577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486278 + 486279.

It is an arithmetic number, because the mean of its divisors is an integer number (486279).

2⁹⁷²⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

972557 is a deficient number, since it is larger than the sum of its proper divisors (1).

972557 is an equidigital number, since it uses as much as digits as its factorization.

972557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 35.

The square root of 972557 is about 986.1830458896. The cubic root of 972557 is about 99.0767353915.

The spelling of 972557 in words is "nine hundred seventy-two thousand, five hundred fifty-seven".