23495921 has 4 divisors (see below), whose sum is σ = 24878052. Its totient is φ = 22113792.

The previous prime is 23495917. The next prime is 23495929. The reversal of 23495921 is 12959432.

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 16313521 + 7182400 = 4039^2 + 2680^2 .

It is a cyclic number.

It is not a de Polignac number, because 23495921 - 2² = 23495917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23495929) 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, 691040 + ... + 691073.

It is an arithmetic number, because the mean of its divisors is an integer number (6219513).

Almost surely, 2^23495921 is an apocalyptic number.

It is an amenable number.

23495921 is a deficient number, since it is larger than the sum of its proper divisors (1382131).

23495921 is a wasteful number, since it uses less digits than its factorization.

23495921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382130.

The product of its digits is 19440, while the sum is 35.

The square root of 23495921 is about 4847.2591224320. The cubic root of 23495921 is about 286.4161423714.

The spelling of 23495921 in words is "twenty-three million, four hundred ninety-five thousand, nine hundred twenty-one".