23155149 has 8 divisors (see below), whose sum is σ = 31044832. Its totient is φ = 15351120.

The previous prime is 23155147. The next prime is 23155151. The reversal of 23155149 is 94155132.

It is an interprime number because it is at equal distance from previous prime (23155147) and next prime (23155151).

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

It is not a de Polignac number, because 23155149 - 2¹ = 23155147 is a prime.

It is a super-3 number, since 3×23155149³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23155147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20779 + ... + 21864.

It is an arithmetic number, because the mean of its divisors is an integer number (3880604).

Almost surely, 2^23155149 is an apocalyptic number.

It is an amenable number.

23155149 is a deficient number, since it is larger than the sum of its proper divisors (7889683).

23155149 is a wasteful number, since it uses less digits than its factorization.

23155149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42827.

The product of its digits is 5400, while the sum is 30.

The square root of 23155149 is about 4811.9797381120. The cubic root of 23155149 is about 285.0247193087.

The spelling of 23155149 in words is "twenty-three million, one hundred fifty-five thousand, one hundred forty-nine".