23145057 has 18 divisors (see below), whose sum is σ = 36203622. Its totient is φ = 14242176.

The previous prime is 23145053. The next prime is 23145071. The reversal of 23145057 is 75054132.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 904401 + 22240656 = 951^2 + 4716^2 .

It is not a de Polignac number, because 23145057 - 2² = 23145053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23145057.

It is not an unprimeable number, because it can be changed into a prime (23145053) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6088 + ... + 9129.

Almost surely, 2^23145057 is an apocalyptic number.

It is an amenable number.

23145057 is a deficient number, since it is larger than the sum of its proper divisors (13058565).

23145057 is a wasteful number, since it uses less digits than its factorization.

23145057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15249 (or 15233 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 23145057 is about 4810.9309909829. The cubic root of 23145057 is about 284.9833046545.

Adding to 23145057 its reverse (75054132), we get a palindrome (98199189).

The spelling of 23145057 in words is "twenty-three million, one hundred forty-five thousand, fifty-seven".