23137505 has 8 divisors (see below), whose sum is σ = 28722600. Its totient is φ = 17871616.

The previous prime is 23137487. The next prime is 23137511. The reversal of 23137505 is 50573132.

It can be written as a sum of positive squares in 4 ways, for example, as 5058001 + 18079504 = 2249^2 + 4252^2 .

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 23137505 - 2¹⁰ = 23136481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79640 + ... + 79929.

It is an arithmetic number, because the mean of its divisors is an integer number (3590325).

Almost surely, 2^23137505 is an apocalyptic number.

It is an amenable number.

23137505 is a deficient number, since it is larger than the sum of its proper divisors (5585095).

23137505 is a wasteful number, since it uses less digits than its factorization.

23137505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159603.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 23137505 is about 4810.1460476788. The cubic root of 23137505 is about 284.9523055512.

The spelling of 23137505 in words is "twenty-three million, one hundred thirty-seven thousand, five hundred five".