97723519 has 2 divisors, whose sum is σ = 97723520. Its totient is φ = 97723518.

The previous prime is 97723487. The next prime is 97723537. The reversal of 97723519 is 91532779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97723519 - 2⁵ = 97723487 is a prime.

It is a super-2 number, since 2×97723519² = 19099772331486722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97223519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48861759 + 48861760.

It is an arithmetic number, because the mean of its divisors is an integer number (48861760).

Almost surely, 2^97723519 is an apocalyptic number.

97723519 is a deficient number, since it is larger than the sum of its proper divisors (1).

97723519 is an equidigital number, since it uses as much as digits as its factorization.

97723519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The square root of 97723519 is about 9885.5206741982. The cubic root of 97723519 is about 460.6096500699.

The spelling of 97723519 in words is "ninety-seven million, seven hundred twenty-three thousand, five hundred nineteen".