23533137 has 6 divisors (see below), whose sum is σ = 33992322. Its totient is φ = 15688752.

The previous prime is 23533127. The next prime is 23533171. The reversal of 23533137 is 73133532.

It can be written as a sum of positive squares in only one way, i.e., 14676561 + 8856576 = 3831^2 + 2976^2 .

It is not a de Polignac number, because 23533137 - 2⁴ = 23533121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23533137.

It is not an unprimeable number, because it can be changed into a prime (23533127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1307388 + ... + 1307405.

It is an arithmetic number, because the mean of its divisors is an integer number (5665387).

Almost surely, 2^23533137 is an apocalyptic number.

It is an amenable number.

23533137 is a deficient number, since it is larger than the sum of its proper divisors (10459185).

23533137 is a wasteful number, since it uses less digits than its factorization.

23533137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614799 (or 2614796 counting only the distinct ones).

The product of its digits is 5670, while the sum is 27.

The square root of 23533137 is about 4851.0964739943. The cubic root of 23533137 is about 286.5672840702.

Adding to 23533137 its reverse (73133532), we get a palindrome (96666669).

The spelling of 23533137 in words is "twenty-three million, five hundred thirty-three thousand, one hundred thirty-seven".