23520045 has 16 divisors (see below), whose sum is σ = 37844352. Its totient is φ = 12473280.

The previous prime is 23520031. The next prime is 23520059. The reversal of 23520045 is 54002532.

23520045 = T₁₆₄ + T₁₆₅ + ... + T₅₂₅.

It is an interprime number because it is at equal distance from previous prime (23520031) and next prime (23520059).

It is not a de Polignac number, because 23520045 - 2⁹ = 23519533 is a prime.

It is a super-3 number, since 3×23520045³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617 + ... + 7046.

It is an arithmetic number, because the mean of its divisors is an integer number (2365272).

Almost surely, 2^23520045 is an apocalyptic number.

It is an amenable number.

23520045 is a deficient number, since it is larger than the sum of its proper divisors (14324307).

23520045 is a wasteful number, since it uses less digits than its factorization.

23520045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8852.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 23520045 is about 4849.7469006124. The cubic root of 23520045 is about 286.5141329919.

Adding to 23520045 its reverse (54002532), we get a palindrome (77522577).

The spelling of 23520045 in words is "twenty-three million, five hundred twenty thousand, forty-five".