23453251 has 4 divisors (see below), whose sum is σ = 24832872. Its totient is φ = 22073632.

The previous prime is 23453249. The next prime is 23453273. The reversal of 23453251 is 15235432.

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 23453251 - 2¹ = 23453249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23453281) 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, 689785 + ... + 689818.

It is an arithmetic number, because the mean of its divisors is an integer number (6208218).

Almost surely, 2^23453251 is an apocalyptic number.

23453251 is a deficient number, since it is larger than the sum of its proper divisors (1379621).

23453251 is a wasteful number, since it uses less digits than its factorization.

23453251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379620.

The product of its digits is 3600, while the sum is 25.

The square root of 23453251 is about 4842.8556658236. The cubic root of 23453251 is about 286.2426543503.

Adding to 23453251 its reverse (15235432), we get a palindrome (38688683).

The spelling of 23453251 in words is "twenty-three million, four hundred fifty-three thousand, two hundred fifty-one".