97211057 has 2 divisors, whose sum is σ = 97211058. Its totient is φ = 97211056.

The previous prime is 97211047. The next prime is 97211113. The reversal of 97211057 is 75011279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68492176 + 28718881 = 8276^2 + 5359^2 .

It is a cyclic number.

It is not a de Polignac number, because 97211057 - 2⁸ = 97210801 is a prime.

It is not a weakly prime, because it can be changed into another prime (97211047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48605528 + 48605529.

It is an arithmetic number, because the mean of its divisors is an integer number (48605529).

Almost surely, 2^97211057 is an apocalyptic number.

It is an amenable number.

97211057 is a deficient number, since it is larger than the sum of its proper divisors (1).

97211057 is an equidigital number, since it uses as much as digits as its factorization.

97211057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 97211057 is about 9859.5667754724. The cubic root of 97211057 is about 459.8030931031.

The spelling of 97211057 in words is "ninety-seven million, two hundred eleven thousand, fifty-seven".