23405051 has 4 divisors (see below), whose sum is σ = 23416392. Its totient is φ = 23393712.

The previous prime is 23405047. The next prime is 23405071. The reversal of 23405051 is 15050432.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23405051 - 2² = 23405047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23405021) 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, 1601 + ... + 7026.

It is an arithmetic number, because the mean of its divisors is an integer number (5854098).

Almost surely, 2^23405051 is an apocalyptic number.

23405051 is a deficient number, since it is larger than the sum of its proper divisors (11341).

23405051 is an equidigital number, since it uses as much as digits as its factorization.

23405051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23405051 is about 4837.8767036790. The cubic root of 23405051 is about 286.0464291259.

Adding to 23405051 its reverse (15050432), we get a palindrome (38455483).

The spelling of 23405051 in words is "twenty-three million, four hundred five thousand, fifty-one".