23210155 has 8 divisors (see below), whose sum is σ = 27880272. Its totient is φ = 18549408.

The previous prime is 23210149. The next prime is 23210171. The reversal of 23210155 is 55101232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23210155 is a prime.

It is a super-2 number, since 2×23210155² = 1077422590248050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5509 + ... + 8761.

It is an arithmetic number, because the mean of its divisors is an integer number (3485034).

Almost surely, 2^23210155 is an apocalyptic number.

23210155 is a deficient number, since it is larger than the sum of its proper divisors (4670117).

23210155 is a wasteful number, since it uses less digits than its factorization.

23210155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 23210155 is about 4817.6918747467. The cubic root of 23210155 is about 285.2502367726.

Adding to 23210155 its reverse (55101232), we get a palindrome (78311387).

The spelling of 23210155 in words is "twenty-three million, two hundred ten thousand, one hundred fifty-five".