23491057 has 2 divisors, whose sum is σ = 23491058. Its totient is φ = 23491056.

The previous prime is 23491033. The next prime is 23491067. The reversal of 23491057 is 75019432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19633761 + 3857296 = 4431^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 23491057 - 2¹¹ = 23489009 is a prime.

It is not a weakly prime, because it can be changed into another prime (23491067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11745528 + 11745529.

It is an arithmetic number, because the mean of its divisors is an integer number (11745529).

Almost surely, 2^23491057 is an apocalyptic number.

It is an amenable number.

23491057 is a deficient number, since it is larger than the sum of its proper divisors (1).

23491057 is an equidigital number, since it uses as much as digits as its factorization.

23491057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 23491057 is about 4846.7573696235. The cubic root of 23491057 is about 286.3963768944.

The spelling of 23491057 in words is "twenty-three million, four hundred ninety-one thousand, fifty-seven".