23553779 has 2 divisors, whose sum is σ = 23553780. Its totient is φ = 23553778.

The previous prime is 23553773. The next prime is 23553781. The reversal of 23553779 is 97735532.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23553779 - 2⁴ = 23553763 is a prime.

It is a Sophie Germain prime.

Together with 23553781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23553773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11776889 + 11776890.

It is an arithmetic number, because the mean of its divisors is an integer number (11776890).

Almost surely, 2^23553779 is an apocalyptic number.

23553779 is a deficient number, since it is larger than the sum of its proper divisors (1).

23553779 is an equidigital number, since it uses as much as digits as its factorization.

23553779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198450, while the sum is 41.

The square root of 23553779 is about 4853.2235678979. The cubic root of 23553779 is about 286.6510467122.

The spelling of 23553779 in words is "twenty-three million, five hundred fifty-three thousand, seven hundred seventy-nine".