54123681 has 8 divisors (see below), whose sum is σ = 72684640. Its totient is φ = 35822592.

The previous prime is 54123679. The next prime is 54123683. The reversal of 54123681 is 18632145.

It is an interprime number because it is at equal distance from previous prime (54123679) and next prime (54123683).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54123681 - 2¹ = 54123679 is a prime.

It is a super-2 number, since 2×54123681² = 5858745689979522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54123683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64480 + ... + 65313.

It is an arithmetic number, because the mean of its divisors is an integer number (9085580).

Almost surely, 2^54123681 is an apocalyptic number.

It is an amenable number.

54123681 is a deficient number, since it is larger than the sum of its proper divisors (18560959).

54123681 is a wasteful number, since it uses less digits than its factorization.

54123681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129935.

The product of its digits is 5760, while the sum is 30.

The square root of 54123681 is about 7356.8798413458. The cubic root of 54123681 is about 378.2646658525.

The spelling of 54123681 in words is "fifty-four million, one hundred twenty-three thousand, six hundred eighty-one".