23505437 has 2 divisors, whose sum is σ = 23505438. Its totient is φ = 23505436.

The previous prime is 23505431. The next prime is 23505463. The reversal of 23505437 is 73450532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18438436 + 5067001 = 4294^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 23505437 - 2¹⁸ = 23243293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23505431) 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, 11752718 + 11752719.

It is an arithmetic number, because the mean of its divisors is an integer number (11752719).

Almost surely, 2^23505437 is an apocalyptic number.

It is an amenable number.

23505437 is a deficient number, since it is larger than the sum of its proper divisors (1).

23505437 is an equidigital number, since it uses as much as digits as its factorization.

23505437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 23505437 is about 4848.2406087157. The cubic root of 23505437 is about 286.4548039493.

Adding to 23505437 its reverse (73450532), we get a palindrome (96955969).

The spelling of 23505437 in words is "twenty-three million, five hundred five thousand, four hundred thirty-seven".