123845553 has 24 divisors (see below), whose sum is σ = 202791680. Its totient is φ = 72200160.

The previous prime is 123845539. The next prime is 123845567. The reversal of 123845553 is 355548321.

123845553 is a `hidden beast` number, since 1 + 23 + 84 + 5 + 553 = 666.

It is an interprime number because it is at equal distance from previous prime (123845539) and next prime (123845567).

It is not a de Polignac number, because 123845553 - 2⁴ = 123845537 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (123845053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25633 + ... + 30078.

Almost surely, 2^123845553 is an apocalyptic number.

123845553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123845553 is a deficient number, since it is larger than the sum of its proper divisors (78946127).

123845553 is a wasteful number, since it uses less digits than its factorization.

123845553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55749 (or 55746 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 123845553 is about 11128.5916898770. The cubic root of 123845553 is about 498.4559742100.

The spelling of 123845553 in words is "one hundred twenty-three million, eight hundred forty-five thousand, five hundred fifty-three".