97657253 has 2 divisors, whose sum is σ = 97657254. Its totient is φ = 97657252.

The previous prime is 97657243. The next prime is 97657271. The reversal of 97657253 is 35275679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 82369 = 9878^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 97657253 - 2⁸ = 97656997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97657243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48828626 + 48828627.

It is an arithmetic number, because the mean of its divisors is an integer number (48828627).

Almost surely, 2^97657253 is an apocalyptic number.

It is an amenable number.

97657253 is a deficient number, since it is larger than the sum of its proper divisors (1).

97657253 is an equidigital number, since it uses as much as digits as its factorization.

97657253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 44.

The square root of 97657253 is about 9882.1684361278. The cubic root of 97657253 is about 460.5055138937.

The spelling of 97657253 in words is "ninety-seven million, six hundred fifty-seven thousand, two hundred fifty-three".