23239537 has 2 divisors, whose sum is σ = 23239538. Its totient is φ = 23239536.

The previous prime is 23239529. The next prime is 23239547. The reversal of 23239537 is 73593232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22363441 + 876096 = 4729^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 23239537 - 2³ = 23239529 is a prime.

It is not a weakly prime, because it can be changed into another prime (23239547) 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 as a sum of consecutive naturals, namely, 11619768 + 11619769.

It is an arithmetic number, because the mean of its divisors is an integer number (11619769).

Almost surely, 2^23239537 is an apocalyptic number.

It is an amenable number.

23239537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23239537 is an equidigital number, since it uses as much as digits as its factorization.

23239537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 34.

The square root of 23239537 is about 4820.7402958467. The cubic root of 23239537 is about 285.3705531932.

The spelling of 23239537 in words is "twenty-three million, two hundred thirty-nine thousand, five hundred thirty-seven".