23047549 has 4 divisors (see below), whose sum is σ = 26340064. Its totient is φ = 19755036.

The previous prime is 23047543. The next prime is 23047637. The reversal of 23047549 is 94574032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 23047549 - 2¹⁵ = 23014781 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 (23047543) 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, 1646247 + ... + 1646260.

It is an arithmetic number, because the mean of its divisors is an integer number (6585016).

Almost surely, 2^23047549 is an apocalyptic number.

It is an amenable number.

23047549 is a deficient number, since it is larger than the sum of its proper divisors (3292515).

23047549 is an equidigital number, since it uses as much as digits as its factorization.

23047549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292514.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23047549 is about 4800.7862897655. The cubic root of 23047549 is about 284.5825384976.

The spelling of 23047549 in words is "twenty-three million, forty-seven thousand, five hundred forty-nine".