23212455 has 16 divisors (see below), whose sum is σ = 42445824. Its totient is φ = 10611360.

The previous prime is 23212447. The next prime is 23212477. The reversal of 23212455 is 55421232.

It is not a de Polignac number, because 23212455 - 2³ = 23212447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110431 + ... + 110640.

It is an arithmetic number, because the mean of its divisors is an integer number (2652864).

Almost surely, 2^23212455 is an apocalyptic number.

23212455 is a deficient number, since it is larger than the sum of its proper divisors (19233369).

23212455 is a wasteful number, since it uses less digits than its factorization.

23212455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221086.

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

The square root of 23212455 is about 4817.9305723516. The cubic root of 23212455 is about 285.2596587099.

Adding to 23212455 its reverse (55421232), we get a palindrome (78633687).

The spelling of 23212455 in words is "twenty-three million, two hundred twelve thousand, four hundred fifty-five".