54491831 has 4 divisors (see below), whose sum is σ = 56249664. Its totient is φ = 52734000.

The previous prime is 54491821. The next prime is 54491873. The reversal of 54491831 is 13819445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54491831 is a prime.

It is a super-2 number, since 2×54491831² = 5938719291465122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54491791 and 54491800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54491821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878870 + ... + 878931.

It is an arithmetic number, because the mean of its divisors is an integer number (14062416).

Almost surely, 2^54491831 is an apocalyptic number.

54491831 is a deficient number, since it is larger than the sum of its proper divisors (1757833).

54491831 is a wasteful number, since it uses less digits than its factorization.

54491831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757832.

The product of its digits is 17280, while the sum is 35.

The square root of 54491831 is about 7381.8582348891. The cubic root of 54491831 is about 379.1203823443.

The spelling of 54491831 in words is "fifty-four million, four hundred ninety-one thousand, eight hundred thirty-one".