54728191 has 8 divisors (see below), whose sum is σ = 64703520. Its totient is φ = 45292128.

The previous prime is 54728129. The next prime is 54728203. The reversal of 54728191 is 19182745.

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

It is a de Polignac number, because none of the positive numbers 2^k-54728191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54728191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54722191) 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, 134596 + ... + 135001.

It is an arithmetic number, because the mean of its divisors is an integer number (8087940).

Almost surely, 2^54728191 is an apocalyptic number.

54728191 is a deficient number, since it is larger than the sum of its proper divisors (9975329).

54728191 is a wasteful number, since it uses less digits than its factorization.

54728191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269633.

The product of its digits is 20160, while the sum is 37.

The square root of 54728191 is about 7397.8504310374. The cubic root of 54728191 is about 379.6677405005.

The spelling of 54728191 in words is "fifty-four million, seven hundred twenty-eight thousand, one hundred ninety-one".