23507157 has 8 divisors (see below), whose sum is σ = 31419360. Its totient is φ = 15633200.

The previous prime is 23507117. The next prime is 23507179. The reversal of 23507157 is 75170532.

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-23507157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23507117) 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 in 7 ways as a sum of consecutive naturals, for example, 8094 + ... + 10607.

It is an arithmetic number, because the mean of its divisors is an integer number (3927420).

Almost surely, 2^23507157 is an apocalyptic number.

It is an amenable number.

23507157 is a deficient number, since it is larger than the sum of its proper divisors (7912203).

23507157 is a wasteful number, since it uses less digits than its factorization.

23507157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19123.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 23507157 is about 4848.4179894064. The cubic root of 23507157 is about 286.4617908469.

Adding to 23507157 its reverse (75170532), we get a palindrome (98677689).

The spelling of 23507157 in words is "twenty-three million, five hundred seven thousand, one hundred fifty-seven".