23540977 has 2 divisors, whose sum is σ = 23540978. Its totient is φ = 23540976.

The previous prime is 23540969. The next prime is 23541013. The reversal of 23540977 is 77904532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19280881 + 4260096 = 4391^2 + 2064^2 .

It is a cyclic number.

It is not a de Polignac number, because 23540977 - 2³ = 23540969 is a prime.

It is a super-2 number, since 2×23540977² = 1108355196229058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23543977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11770488 + 11770489.

It is an arithmetic number, because the mean of its divisors is an integer number (11770489).

Almost surely, 2^23540977 is an apocalyptic number.

It is an amenable number.

23540977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23540977 is an equidigital number, since it uses as much as digits as its factorization.

23540977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 23540977 is about 4851.9044714421. The cubic root of 23540977 is about 286.5991035716.

The spelling of 23540977 in words is "twenty-three million, five hundred forty thousand, nine hundred seventy-seven".