97542817 has 2 divisors, whose sum is σ = 97542818. Its totient is φ = 97542816.

The previous prime is 97542799. The next prime is 97542847. The reversal of 97542817 is 71824579.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86192656 + 11350161 = 9284^2 + 3369^2 .

It is a cyclic number.

It is not a de Polignac number, because 97542817 - 2¹⁹ = 97018529 is a prime.

It is a super-2 number, since 2×97542817² = 19029202296590978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97542847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48771408 + 48771409.

It is an arithmetic number, because the mean of its divisors is an integer number (48771409).

Almost surely, 2^97542817 is an apocalyptic number.

It is an amenable number.

97542817 is a deficient number, since it is larger than the sum of its proper divisors (1).

97542817 is an equidigital number, since it uses as much as digits as its factorization.

97542817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 97542817 is about 9876.3767141599. The cubic root of 97542817 is about 460.3255681992.

The spelling of 97542817 in words is "ninety-seven million, five hundred forty-two thousand, eight hundred seventeen".