54291681 has 16 divisors (see below), whose sum is σ = 80587200. Its totient is φ = 36124704.

The previous prime is 54291673. The next prime is 54291697. The reversal of 54291681 is 18619245.

It is not a de Polignac number, because 54291681 - 2³ = 54291673 is a prime.

It is a super-2 number, since 2×54291681² = 5895173251611522, which contains 22 as substring.

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 (54291631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15030 + ... + 18288.

It is an arithmetic number, because the mean of its divisors is an integer number (5036700).

Almost surely, 2^54291681 is an apocalyptic number.

It is an amenable number.

54291681 is a deficient number, since it is larger than the sum of its proper divisors (26295519).

54291681 is a wasteful number, since it uses less digits than its factorization.

54291681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885 (or 3879 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 54291681 is about 7368.2888787018. The cubic root of 54291681 is about 378.6556396637.

The spelling of 54291681 in words is "fifty-four million, two hundred ninety-one thousand, six hundred eighty-one".