23257855 has 12 divisors (see below), whose sum is σ = 28910232. Its totient is φ = 17961440.

The previous prime is 23257849. The next prime is 23257877. The reversal of 23257855 is 55875232.

It is not a de Polignac number, because 23257855 - 2¹¹ = 23255807 is a prime.

It is a super-3 number, since 3×23257855³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1440 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (2409186).

Almost surely, 2^23257855 is an apocalyptic number.

23257855 is a deficient number, since it is larger than the sum of its proper divisors (5652377).

23257855 is an equidigital number, since it uses as much as digits as its factorization.

23257855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5594 (or 5565 counting only the distinct ones).

The product of its digits is 84000, while the sum is 37.

The square root of 23257855 is about 4822.6398372676. The cubic root of 23257855 is about 285.4455123018.

The spelling of 23257855 in words is "twenty-three million, two hundred fifty-seven thousand, eight hundred fifty-five".