23242551 has 4 divisors (see below), whose sum is σ = 30990072. Its totient is φ = 15495032.

The previous prime is 23242547. The next prime is 23242589. The reversal of 23242551 is 15524232.

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 23242551 - 2² = 23242547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23242951) 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, 3873756 + ... + 3873761.

It is an arithmetic number, because the mean of its divisors is an integer number (7747518).

Almost surely, 2^23242551 is an apocalyptic number.

23242551 is a deficient number, since it is larger than the sum of its proper divisors (7747521).

23242551 is an equidigital number, since it uses as much as digits as its factorization.

23242551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7747520.

The product of its digits is 2400, while the sum is 24.

The square root of 23242551 is about 4821.0528933004. The cubic root of 23242551 is about 285.3828894927.

Adding to 23242551 its reverse (15524232), we get a palindrome (38766783).

The spelling of 23242551 in words is "twenty-three million, two hundred forty-two thousand, five hundred fifty-one".