54693681 has 16 divisors (see below), whose sum is σ = 86217600. Its totient is φ = 30175488.

The previous prime is 54693677. The next prime is 54693689. The reversal of 54693681 is 18639645.

It is not a de Polignac number, because 54693681 - 2² = 54693677 is a prime.

It is a super-2 number, since 2×54693681² = 5982797482659522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54693689) 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, 44296 + ... + 45513.

It is an arithmetic number, because the mean of its divisors is an integer number (5388600).

Almost surely, 2^54693681 is an apocalyptic number.

It is an amenable number.

54693681 is a deficient number, since it is larger than the sum of its proper divisors (31523919).

54693681 is a wasteful number, since it uses less digits than its factorization.

54693681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89848.

The product of its digits is 155520, while the sum is 42.

The square root of 54693681 is about 7395.5176289425. The cubic root of 54693681 is about 379.5879212554.

The spelling of 54693681 in words is "fifty-four million, six hundred ninety-three thousand, six hundred eighty-one".