23378553 has 48 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 12848640.

The previous prime is 23378543. The next prime is 23378567. The reversal of 23378553 is 35587332.

23378553 is a `hidden beast` number, since 2 + 33 + 78 + 553 = 666.

It is not a de Polignac number, because 23378553 - 2⁶ = 23378489 is a prime.

It is a super-3 number, since 3×23378553³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (23378513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48568 + ... + 49046.

It is an arithmetic number, because the mean of its divisors is an integer number (842400).

Almost surely, 2^23378553 is an apocalyptic number.

It is an amenable number.

23378553 is a deficient number, since it is larger than the sum of its proper divisors (17056647).

23378553 is a wasteful number, since it uses less digits than its factorization.

23378553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 539 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 23378553 is about 4835.1373300042. The cubic root of 23378553 is about 285.9384393233.

The spelling of 23378553 in words is "twenty-three million, three hundred seventy-eight thousand, five hundred fifty-three".