23065551 has 12 divisors (see below), whose sum is σ = 33739680. Its totient is φ = 15181920.

The previous prime is 23065543. The next prime is 23065589. The reversal of 23065551 is 15556032.

23065551 is a `hidden beast` number, since 2 + 3 + 0 + 655 + 5 + 1 = 666.

It is not a de Polignac number, because 23065551 - 2³ = 23065543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23069551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15510 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (2811640).

Almost surely, 2^23065551 is an apocalyptic number.

23065551 is a deficient number, since it is larger than the sum of its proper divisors (10674129).

23065551 is a wasteful number, since it uses less digits than its factorization.

23065551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32526 (or 32523 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 23065551 is about 4802.6608250011. The cubic root of 23065551 is about 284.6566132086.

The spelling of 23065551 in words is "twenty-three million, sixty-five thousand, five hundred fifty-one".