97286557 has 2 divisors, whose sum is σ = 97286558. Its totient is φ = 97286556.

The previous prime is 97286549. The next prime is 97286591. The reversal of 97286557 is 75568279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54331641 + 42954916 = 7371^2 + 6554^2 .

It is a cyclic number.

It is not a de Polignac number, because 97286557 - 2³ = 97286549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97286557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97286857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48643278 + 48643279.

It is an arithmetic number, because the mean of its divisors is an integer number (48643279).

Almost surely, 2^97286557 is an apocalyptic number.

It is an amenable number.

97286557 is a deficient number, since it is larger than the sum of its proper divisors (1).

97286557 is an equidigital number, since it uses as much as digits as its factorization.

97286557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 49.

The square root of 97286557 is about 9863.3948009800. The cubic root of 97286557 is about 459.9220992847.

The spelling of 97286557 in words is "ninety-seven million, two hundred eighty-six thousand, five hundred fifty-seven".