23473551 has 4 divisors (see below), whose sum is σ = 31298072. Its totient is φ = 15649032.

The previous prime is 23473529. The next prime is 23473559. The reversal of 23473551 is 15537432.

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

It is not a de Polignac number, because 23473551 - 2⁵ = 23473519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23473559) 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, 3912256 + ... + 3912261.

It is an arithmetic number, because the mean of its divisors is an integer number (7824518).

Almost surely, 2^23473551 is an apocalyptic number.

23473551 is a deficient number, since it is larger than the sum of its proper divisors (7824521).

23473551 is an equidigital number, since it uses as much as digits as its factorization.

23473551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824520.

The product of its digits is 12600, while the sum is 30.

The square root of 23473551 is about 4844.9510833444. The cubic root of 23473551 is about 286.3252164678.

The spelling of 23473551 in words is "twenty-three million, four hundred seventy-three thousand, five hundred fifty-one".