23834521 has 2 divisors, whose sum is σ = 23834522. Its totient is φ = 23834520.

The previous prime is 23834507. The next prime is 23834557. The reversal of 23834521 is 12543832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 746496 = 4805^2 + 864^2 .

It is a cyclic number.

It is not a de Polignac number, because 23834521 - 2¹⁵ = 23801753 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 23834521.

It is not a weakly prime, because it can be changed into another prime (23834501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11917260 + 11917261.

It is an arithmetic number, because the mean of its divisors is an integer number (11917261).

Almost surely, 2^23834521 is an apocalyptic number.

It is an amenable number.

23834521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23834521 is an equidigital number, since it uses as much as digits as its factorization.

23834521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 23834521 is about 4882.0611425913. The cubic root of 23834521 is about 287.7854344808.

The spelling of 23834521 in words is "twenty-three million, eight hundred thirty-four thousand, five hundred twenty-one".