97156441 has 2 divisors, whose sum is σ = 97156442. Its totient is φ = 97156440.

The previous prime is 97156403. The next prime is 97156457. The reversal of 97156441 is 14465179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 47665216 = 7035^2 + 6904^2 .

It is a cyclic number.

It is not a de Polignac number, because 97156441 - 2¹⁵ = 97123673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97156441.

It is not a weakly prime, because it can be changed into another prime (97156541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48578220 + 48578221.

It is an arithmetic number, because the mean of its divisors is an integer number (48578221).

Almost surely, 2^97156441 is an apocalyptic number.

It is an amenable number.

97156441 is a deficient number, since it is larger than the sum of its proper divisors (1).

97156441 is an equidigital number, since it uses as much as digits as its factorization.

97156441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 97156441 is about 9856.7966906090. The cubic root of 97156441 is about 459.7169667200.

The spelling of 97156441 in words is "ninety-seven million, one hundred fifty-six thousand, four hundred forty-one".