23205057 has 16 divisors (see below), whose sum is σ = 32090688. Its totient is φ = 14904320.

The previous prime is 23205011. The next prime is 23205067. The reversal of 23205057 is 75050232.

It is not a de Polignac number, because 23205057 - 2²² = 19010753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23205067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9073 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (2005668).

Almost surely, 2^23205057 is an apocalyptic number.

It is an amenable number.

23205057 is a deficient number, since it is larger than the sum of its proper divisors (8885631).

23205057 is a wasteful number, since it uses less digits than its factorization.

23205057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 23205057 is about 4817.1627541531. The cubic root of 23205057 is about 285.2293506247.

Adding to 23205057 its reverse (75050232), we get a palindrome (98255289).

The spelling of 23205057 in words is "twenty-three million, two hundred five thousand, fifty-seven".