23533651 has 2 divisors, whose sum is σ = 23533652. Its totient is φ = 23533650.

The previous prime is 23533649. The next prime is 23533663. The reversal of 23533651 is 15633532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23533651 - 2¹ = 23533649 is a prime.

Together with 23533649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23533691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11766825 + 11766826.

It is an arithmetic number, because the mean of its divisors is an integer number (11766826).

Almost surely, 2^23533651 is an apocalyptic number.

23533651 is the 2170-th centered decagonal number.

23533651 is a deficient number, since it is larger than the sum of its proper divisors (1).

23533651 is an equidigital number, since it uses as much as digits as its factorization.

23533651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 28.

The square root of 23533651 is about 4851.1494514187. The cubic root of 23533651 is about 286.5693704121.

The spelling of 23533651 in words is "twenty-three million, five hundred thirty-three thousand, six hundred fifty-one".