97424557 has 2 divisors, whose sum is σ = 97424558. Its totient is φ = 97424556.

The previous prime is 97424539. The next prime is 97424581. The reversal of 97424557 is 75542479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 224676 = 9859^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 97424557 - 2¹¹ = 97422509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97424357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48712278 + 48712279.

It is an arithmetic number, because the mean of its divisors is an integer number (48712279).

Almost surely, 2^97424557 is an apocalyptic number.

It is an amenable number.

97424557 is a deficient number, since it is larger than the sum of its proper divisors (1).

97424557 is an equidigital number, since it uses as much as digits as its factorization.

97424557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 97424557 is about 9870.3878849820. The cubic root of 97424557 is about 460.1394614949.

The spelling of 97424557 in words is "ninety-seven million, four hundred twenty-four thousand, five hundred fifty-seven".