23015455 has 4 divisors (see below), whose sum is σ = 27618552. Its totient is φ = 18412360.

The previous prime is 23015429. The next prime is 23015491. The reversal of 23015455 is 55451032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23015455 - 2¹³ = 23007263 is a prime.

It is a super-2 number, since 2×23015455² = 1059422337714050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301541 + ... + 2301550.

It is an arithmetic number, because the mean of its divisors is an integer number (6904638).

Almost surely, 2^23015455 is an apocalyptic number.

23015455 is a deficient number, since it is larger than the sum of its proper divisors (4603097).

23015455 is an equidigital number, since it uses as much as digits as its factorization.

23015455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603096.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 23015455 is about 4797.4425478582. The cubic root of 23015455 is about 284.4503822217.

Adding to 23015455 its reverse (55451032), we get a palindrome (78466487).

The spelling of 23015455 in words is "twenty-three million, fifteen thousand, four hundred fifty-five".