23553011 has 4 divisors (see below), whose sum is σ = 23697672. Its totient is φ = 23408352.

The previous prime is 23553001. The next prime is 23553029. The reversal of 23553011 is 11035532.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23553011 - 2¹⁴ = 23536627 is a prime.

It is a super-2 number, since 2×23553011² = 1109488654332242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23553001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72086 + ... + 72411.

It is an arithmetic number, because the mean of its divisors is an integer number (5924418).

Almost surely, 2^23553011 is an apocalyptic number.

23553011 is a deficient number, since it is larger than the sum of its proper divisors (144661).

23553011 is a wasteful number, since it uses less digits than its factorization.

23553011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144660.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 23553011 is about 4853.1444445844. The cubic root of 23553011 is about 286.6479311414.

Adding to 23553011 its reverse (11035532), we get a palindrome (34588543).

The spelling of 23553011 in words is "twenty-three million, five hundred fifty-three thousand, eleven".