97023581 has 2 divisors, whose sum is σ = 97023582. Its totient is φ = 97023580.

The previous prime is 97023547. The next prime is 97023587. The reversal of 97023581 is 18532079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69039481 + 27984100 = 8309^2 + 5290^2 .

It is a cyclic number.

It is not a de Polignac number, because 97023581 - 2⁶ = 97023517 is a prime.

It is a super-2 number, since 2×97023581² = 18827150540127122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97023587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48511790 + 48511791.

It is an arithmetic number, because the mean of its divisors is an integer number (48511791).

Almost surely, 2^97023581 is an apocalyptic number.

It is an amenable number.

97023581 is a deficient number, since it is larger than the sum of its proper divisors (1).

97023581 is an equidigital number, since it uses as much as digits as its factorization.

97023581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 97023581 is about 9850.0548729436. The cubic root of 97023581 is about 459.5073190705.

The spelling of 97023581 in words is "ninety-seven million, twenty-three thousand, five hundred eighty-one".