23850561 has 16 divisors (see below), whose sum is σ = 37231488. Its totient is φ = 13296000.

The previous prime is 23850553. The next prime is 23850581. The reversal of 23850561 is 16505832.

It is not a de Polignac number, because 23850561 - 2³ = 23850553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (23850511) 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, 12990 + ... + 14711.

It is an arithmetic number, because the mean of its divisors is an integer number (2326968).

Almost surely, 2^23850561 is an apocalyptic number.

23850561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23850561 is a deficient number, since it is larger than the sum of its proper divisors (13380927).

23850561 is a wasteful number, since it uses less digits than its factorization.

23850561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27752.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 23850561 is about 4883.7036150856. The cubic root of 23850561 is about 287.8499773241.

The spelling of 23850561 in words is "twenty-three million, eight hundred fifty thousand, five hundred sixty-one".