23053021 has 4 divisors (see below), whose sum is σ = 23067772. Its totient is φ = 23038272.

The previous prime is 23053013. The next prime is 23053027. The reversal of 23053021 is 12035032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3956121 + 19096900 = 1989^2 + 4370^2 .

It is a cyclic number.

It is not a de Polignac number, because 23053021 - 2³ = 23053013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23052986 and 23053004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23053027) 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, 4710 + ... + 8263.

It is an arithmetic number, because the mean of its divisors is an integer number (5766943).

Almost surely, 2^23053021 is an apocalyptic number.

It is an amenable number.

23053021 is a deficient number, since it is larger than the sum of its proper divisors (14751).

23053021 is a wasteful number, since it uses less digits than its factorization.

23053021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14750.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 23053021 is about 4801.3561625857. The cubic root of 23053021 is about 284.6050587870.

Adding to 23053021 its reverse (12035032), we get a palindrome (35088053).

The spelling of 23053021 in words is "twenty-three million, fifty-three thousand, twenty-one".