54191628 has 18 divisors (see below), whose sum is σ = 136984484. Its totient is φ = 18063864.

The previous prime is 54191603. The next prime is 54191659. The reversal of 54191628 is 82619145.

54191628 is a `hidden beast` number, since 541 + 91 + 6 + 28 = 666.

54191628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1505323 = 54191628 / (5 + 4 + 1 + 9 + 1 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 54191592 and 54191601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752626 + ... + 752697.

Almost surely, 2^54191628 is an apocalyptic number.

It is an amenable number.

54191628 is an abundant number, since it is smaller than the sum of its proper divisors (82792856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54191628 is a wasteful number, since it uses less digits than its factorization.

54191628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505333 (or 1505328 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 54191628 is about 7361.4963152881. The cubic root of 54191628 is about 378.4228911176.

The spelling of 54191628 in words is "fifty-four million, one hundred ninety-one thousand, six hundred twenty-eight".