97994257 has 4 divisors (see below), whose sum is σ = 98071920. Its totient is φ = 97916596.

The previous prime is 97994233. The next prime is 97994261. The reversal of 97994257 is 75249979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75249979 = 7 ⋅10749997.

It is a cyclic number.

It is not a de Polignac number, because 97994257 - 2¹⁹ = 97469969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97994227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36907 + ... + 39472.

It is an arithmetic number, because the mean of its divisors is an integer number (24517980).

Almost surely, 2^97994257 is an apocalyptic number.

It is an amenable number.

97994257 is a deficient number, since it is larger than the sum of its proper divisors (77663).

97994257 is a wasteful number, since it uses less digits than its factorization.

97994257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77662.

The product of its digits is 1428840, while the sum is 52.

The square root of 97994257 is about 9899.2048670588. The cubic root of 97994257 is about 461.0346229974.

The spelling of 97994257 in words is "ninety-seven million, nine hundred ninety-four thousand, two hundred fifty-seven".