23132537 has 4 divisors (see below), whose sum is σ = 23280036. Its totient is φ = 22985040.

The previous prime is 23132521. The next prime is 23132561. The reversal of 23132537 is 73523132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9174841 + 13957696 = 3029^2 + 3736^2 .

It is a cyclic number.

It is not a de Polignac number, because 23132537 - 2⁴ = 23132521 is a prime.

It is a super-2 number, since 2×23132537² = 1070228536112738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23132567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73514 + ... + 73827.

It is an arithmetic number, because the mean of its divisors is an integer number (5820009).

Almost surely, 2^23132537 is an apocalyptic number.

It is an amenable number.

23132537 is a deficient number, since it is larger than the sum of its proper divisors (147499).

23132537 is a wasteful number, since it uses less digits than its factorization.

23132537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147498.

The product of its digits is 3780, while the sum is 26.

The square root of 23132537 is about 4809.6296115190. The cubic root of 23132537 is about 284.9319094542.

Adding to 23132537 its reverse (73523132), we get a palindrome (96655669).

It can be divided in two parts, 231 and 32537, that added together give a 15-th power (32768 = 2¹⁵).

The spelling of 23132537 in words is "twenty-three million, one hundred thirty-two thousand, five hundred thirty-seven".