23506157 has 8 divisors (see below), whose sum is σ = 24074496. Its totient is φ = 22940752.

The previous prime is 23506141. The next prime is 23506159. The reversal of 23506157 is 75160532.

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 23506157 - 2⁴ = 23506141 is a prime.

It is a super-4 number, since 4×23506157⁴ (a number of 31 digits) contains 4444 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 (23506159) 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, 30023 + ... + 30795.

It is an arithmetic number, because the mean of its divisors is an integer number (3009312).

Almost surely, 2^23506157 is an apocalyptic number.

It is an amenable number.

23506157 is a deficient number, since it is larger than the sum of its proper divisors (568339).

23506157 is an equidigital number, since it uses as much as digits as its factorization.

23506157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 23506157 is about 4848.3148618876. The cubic root of 23506157 is about 286.4577287386.

Adding to 23506157 its reverse (75160532), we get a palindrome (98666689).

The spelling of 23506157 in words is "twenty-three million, five hundred six thousand, one hundred fifty-seven".