23052991 has 4 divisors (see below), whose sum is σ = 24826312. Its totient is φ = 21279672.

The previous prime is 23052989. The next prime is 23053013. The reversal of 23052991 is 19925032.

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 23052991 - 2¹ = 23052989 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23053991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886641 + ... + 886666.

It is an arithmetic number, because the mean of its divisors is an integer number (6206578).

Almost surely, 2^23052991 is an apocalyptic number.

23052991 is a deficient number, since it is larger than the sum of its proper divisors (1773321).

23052991 is a wasteful number, since it uses less digits than its factorization.

23052991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773320.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 23052991 is about 4801.3530384674. The cubic root of 23052991 is about 284.6049353303.

The spelling of 23052991 in words is "twenty-three million, fifty-two thousand, nine hundred ninety-one".