54151681 has 8 divisors (see below), whose sum is σ = 57628800. Its totient is φ = 50707008.

The previous prime is 54151667. The next prime is 54151709. The reversal of 54151681 is 18615145.

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

It is a cyclic number.

It is not a de Polignac number, because 54151681 - 2⁵ = 54151649 is a prime.

It is a super-2 number, since 2×54151681² = 5864809110251522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54151621) 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, 4621 + ... + 11386.

It is an arithmetic number, because the mean of its divisors is an integer number (7203600).

Almost surely, 2^54151681 is an apocalyptic number.

It is an amenable number.

54151681 is a deficient number, since it is larger than the sum of its proper divisors (3477119).

54151681 is a wasteful number, since it uses less digits than its factorization.

54151681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16223.

The product of its digits is 4800, while the sum is 31.

The square root of 54151681 is about 7358.7825759428. The cubic root of 54151681 is about 378.3298842840.

The spelling of 54151681 in words is "fifty-four million, one hundred fifty-one thousand, six hundred eighty-one".