23561151 has 4 divisors (see below), whose sum is σ = 31414872. Its totient is φ = 15707432.

The previous prime is 23561143. The next prime is 23561171. The reversal of 23561151 is 15116532.

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

It is a cyclic number.

It is not a de Polignac number, because 23561151 - 2³ = 23561143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23561141) 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, 3926856 + ... + 3926861.

It is an arithmetic number, because the mean of its divisors is an integer number (7853718).

Almost surely, 2^23561151 is an apocalyptic number.

23561151 is a deficient number, since it is larger than the sum of its proper divisors (7853721).

23561151 is an equidigital number, since it uses as much as digits as its factorization.

23561151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853720.

The product of its digits is 900, while the sum is 24.

The square root of 23561151 is about 4853.9830036785. The cubic root of 23561151 is about 286.6809495017.

Adding to 23561151 its reverse (15116532), we get a palindrome (38677683).

The spelling of 23561151 in words is "twenty-three million, five hundred sixty-one thousand, one hundred fifty-one".