97079581 has 4 divisors (see below), whose sum is σ = 99145152. Its totient is φ = 95014012.

The previous prime is 97079533. The next prime is 97079597. The reversal of 97079581 is 18597079.

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: 18597079 = 3793 ⋅4903.

It is a cyclic number.

It is not a de Polignac number, because 97079581 - 2⁹ = 97079069 is a prime.

It is a super-2 number, since 2×97079581² = 18848890094271122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97019581) 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, 1032715 + ... + 1032808.

It is an arithmetic number, because the mean of its divisors is an integer number (24786288).

Almost surely, 2^97079581 is an apocalyptic number.

It is an amenable number.

97079581 is a deficient number, since it is larger than the sum of its proper divisors (2065571).

97079581 is a wasteful number, since it uses less digits than its factorization.

97079581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065570.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 97079581 is about 9852.8970866441. The cubic root of 97079581 is about 459.5957081008.

The spelling of 97079581 in words is "ninety-seven million, seventy-nine thousand, five hundred eighty-one".