23553505 has 4 divisors (see below), whose sum is σ = 28264212. Its totient is φ = 18842800.

The previous prime is 23553499. The next prime is 23553529. The reversal of 23553505 is 50535532.

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 11505664 + 12047841 = 3392^2 + 3471^2 .

It is not a de Polignac number, because 23553505 - 2¹¹ = 23551457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355346 + ... + 2355355.

It is an arithmetic number, because the mean of its divisors is an integer number (7066053).

Almost surely, 2^23553505 is an apocalyptic number.

It is an amenable number.

23553505 is a deficient number, since it is larger than the sum of its proper divisors (4710707).

23553505 is an equidigital number, since it uses as much as digits as its factorization.

23553505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710706.

The product of its (nonzero) digits is 11250, while the sum is 28.

The square root of 23553505 is about 4853.1953391554. The cubic root of 23553505 is about 286.6499351751.

The spelling of 23553505 in words is "twenty-three million, five hundred fifty-three thousand, five hundred five".