23162155 has 8 divisors (see below), whose sum is σ = 28753200. Its totient is φ = 17890656.

The previous prime is 23162107. The next prime is 23162189. The reversal of 23162155 is 55126132.

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 23162155 - 2⁹ = 23161643 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79725 + ... + 80014.

It is an arithmetic number, because the mean of its divisors is an integer number (3594150).

Almost surely, 2^23162155 is an apocalyptic number.

23162155 is a deficient number, since it is larger than the sum of its proper divisors (5591045).

23162155 is a wasteful number, since it uses less digits than its factorization.

23162155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159773.

The product of its digits is 1800, while the sum is 25.

The square root of 23162155 is about 4812.7076578575. The cubic root of 23162155 is about 285.0534628338.

Adding to 23162155 its reverse (55126132), we get a palindrome (78288287).

The spelling of 23162155 in words is "twenty-three million, one hundred sixty-two thousand, one hundred fifty-five".