54191657 has 8 divisors (see below), whose sum is σ = 60897984. Its totient is φ = 47847888.

The previous prime is 54191603. The next prime is 54191659. The reversal of 54191657 is 75619145.

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 54191657 - 2¹⁴ = 54175273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54191657.

It is not an unprimeable number, because it can be changed into a prime (54191659) 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, 90323 + ... + 90920.

It is an arithmetic number, because the mean of its divisors is an integer number (7612248).

Almost surely, 2^54191657 is an apocalyptic number.

It is an amenable number.

54191657 is a deficient number, since it is larger than the sum of its proper divisors (6706327).

54191657 is a wasteful number, since it uses less digits than its factorization.

54191657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181279.

The product of its digits is 37800, while the sum is 38.

The square root of 54191657 is about 7361.4982849961. The cubic root of 54191657 is about 378.4229586204.

The spelling of 54191657 in words is "fifty-four million, one hundred ninety-one thousand, six hundred fifty-seven".