23152551 has 8 divisors (see below), whose sum is σ = 30900720. Its totient is φ = 15419712.

The previous prime is 23152543. The next prime is 23152631. The reversal of 23152551 is 15525132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23152551 - 2³ = 23152543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23152751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 6813.

It is an arithmetic number, because the mean of its divisors is an integer number (3862590).

Almost surely, 2^23152551 is an apocalyptic number.

23152551 is a deficient number, since it is larger than the sum of its proper divisors (7748169).

23152551 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (23152550) it forms an eRAP, since the sums of their prime factors are consecutive (7664 and 7665).

23152551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665.

The product of its digits is 1500, while the sum is 24.

The square root of 23152551 is about 4811.7097792780. The cubic root of 23152551 is about 285.0140590171.

Adding to 23152551 its reverse (15525132), we get a palindrome (38677683).

The spelling of 23152551 in words is "twenty-three million, one hundred fifty-two thousand, five hundred fifty-one".