23045857 has 4 divisors (see below), whose sum is σ = 23668756. Its totient is φ = 22422960.

The previous prime is 23045837. The next prime is 23045899. The reversal of 23045857 is 75854032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19324816 + 3721041 = 4396^2 + 1929^2 .

It is a cyclic number.

It is not a de Polignac number, because 23045857 - 2²³ = 14657249 is a prime.

It is a super-2 number, since 2×23045857² = 1062223049728898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23045837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311394 + ... + 311467.

It is an arithmetic number, because the mean of its divisors is an integer number (5917189).

Almost surely, 2^23045857 is an apocalyptic number.

It is an amenable number.

23045857 is a deficient number, since it is larger than the sum of its proper divisors (622899).

23045857 is an equidigital number, since it uses as much as digits as its factorization.

23045857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622898.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 23045857 is about 4800.6100653979. The cubic root of 23045857 is about 284.5755742655.

Adding to 23045857 its reverse (75854032), we get a palindrome (98899889).

The spelling of 23045857 in words is "twenty-three million, forty-five thousand, eight hundred fifty-seven".