23240551 has 8 divisors (see below), whose sum is σ = 23934224. Its totient is φ = 22550400.

The previous prime is 23240549. The next prime is 23240617. The reversal of 23240551 is 15504232.

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

It is a cyclic number.

It is not a de Polignac number, because 23240551 - 2¹ = 23240549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23240251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18751 + ... + 19951.

It is an arithmetic number, because the mean of its divisors is an integer number (2991778).

Almost surely, 2^23240551 is an apocalyptic number.

23240551 is a deficient number, since it is larger than the sum of its proper divisors (693673).

23240551 is a wasteful number, since it uses less digits than its factorization.

23240551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23240551 is about 4820.8454652685. The cubic root of 23240551 is about 285.3747036134.

Adding to 23240551 its reverse (15504232), we get a palindrome (38744783).

The spelling of 23240551 in words is "twenty-three million, two hundred forty thousand, five hundred fifty-one".