23289545 has 4 divisors (see below), whose sum is σ = 27947460. Its totient is φ = 18631632.

The previous prime is 23289533. The next prime is 23289557. The reversal of 23289545 is 54598232.

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

It is an interprime number because it is at equal distance from previous prime (23289533) and next prime (23289557).

It can be written as a sum of positive squares in 2 ways, for example, as 17272336 + 6017209 = 4156^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 23289545 - 2²⁴ = 6512329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23289499 and 23289508.

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, 2328950 + ... + 2328959.

It is an arithmetic number, because the mean of its divisors is an integer number (6986865).

Almost surely, 2^23289545 is an apocalyptic number.

It is an amenable number.

23289545 is a deficient number, since it is larger than the sum of its proper divisors (4657915).

23289545 is an equidigital number, since it uses as much as digits as its factorization.

23289545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657914.

The product of its digits is 86400, while the sum is 38.

The square root of 23289545 is about 4825.9242638069. The cubic root of 23289545 is about 285.5750980977.

The spelling of 23289545 in words is "twenty-three million, two hundred eighty-nine thousand, five hundred forty-five".