23553811 has 2 divisors, whose sum is σ = 23553812. Its totient is φ = 23553810.

The previous prime is 23553797. The next prime is 23553821. The reversal of 23553811 is 11835532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23553811 - 2⁵ = 23553779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23553811.

It is not a weakly prime, because it can be changed into another prime (23553821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11776905 + 11776906.

It is an arithmetic number, because the mean of its divisors is an integer number (11776906).

Almost surely, 2^23553811 is an apocalyptic number.

23553811 is a deficient number, since it is larger than the sum of its proper divisors (1).

23553811 is an equidigital number, since it uses as much as digits as its factorization.

23553811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 23553811 is about 4853.2268646747. The cubic root of 23553811 is about 286.6511765261.

The spelling of 23553811 in words is "twenty-three million, five hundred fifty-three thousand, eight hundred eleven".