23155151 has 2 divisors, whose sum is σ = 23155152.
Its totient is φ = 23155150.
The previous prime is 23155147. The next prime is 23155157. The reversal of 23155151 is 15155132.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 23155151 - 22 = 23155147 is a prime.
It is a super-2 number, since 2×231551512 = 1072322035665602, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (23155157) by changing a digit.
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 as a sum of consecutive naturals, namely, 11577575 + 11577576.
It is an arithmetic number, because the mean of its divisors is an integer number (11577576).
Almost surely, 223155151 is an apocalyptic number.
23155151 is a deficient number, since it is larger than the sum of its proper divisors (1).
23155151 is an equidigital number, since it uses as much as digits as its factorization.
23155151 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 750, while the sum is 23.
The square root of 23155151 is about 4811.9799459266.
The cubic root of 23155151 is about 285.0247275149.
The spelling of 23155151 in words is "twenty-three million, one hundred fifty-five thousand, one hundred fifty-one".