23780051 has 4 divisors (see below), whose sum is σ = 23886912. Its totient is φ = 23673192.

The previous prime is 23780021. The next prime is 23780063. The reversal of 23780051 is 15008732.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23780051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23780051.

It is not an unprimeable number, because it can be changed into a prime (23780021) 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, 53096 + ... + 53541.

It is an arithmetic number, because the mean of its divisors is an integer number (5971728).

Almost surely, 2^23780051 is an apocalyptic number.

23780051 is a deficient number, since it is larger than the sum of its proper divisors (106861).

23780051 is a wasteful number, since it uses less digits than its factorization.

23780051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106860.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 23780051 is about 4876.4793652798. The cubic root of 23780051 is about 287.5660380122.

Adding to 23780051 its reverse (15008732), we get a palindrome (38788783).

The spelling of 23780051 in words is "twenty-three million, seven hundred eighty thousand, fifty-one".