54113985 has 24 divisors (see below), whose sum is σ = 93997800. Its totient is φ = 28799232.

The previous prime is 54113981. The next prime is 54113989. The reversal of 54113985 is 58931145.

54113985 is a `hidden beast` number, since 541 + 1 + 39 + 85 = 666.

It is an interprime number because it is at equal distance from previous prime (54113981) and next prime (54113989).

It can be written as a sum of positive squares in 4 ways, for example, as 1710864 + 52403121 = 1308^2 + 7239^2 .

It is not a de Polignac number, because 54113985 - 2² = 54113981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54113981) 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, 26791 + ... + 28739.

It is an arithmetic number, because the mean of its divisors is an integer number (3916575).

Almost surely, 2^54113985 is an apocalyptic number.

It is an amenable number.

54113985 is a deficient number, since it is larger than the sum of its proper divisors (39883815).

54113985 is a wasteful number, since it uses less digits than its factorization.

54113985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2574 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 54113985 is about 7356.2208368156. The cubic root of 54113985 is about 378.2420763983.

The spelling of 54113985 in words is "fifty-four million, one hundred thirteen thousand, nine hundred eighty-five".