54781831 has 8 divisors (see below), whose sum is σ = 59462144. Its totient is φ = 50168160.

The previous prime is 54781829. The next prime is 54781847. The reversal of 54781831 is 13818745.

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 54781831 - 2¹ = 54781829 is a prime.

It is a super-2 number, since 2×54781831² = 6002098015425122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54782831) 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, 14940 + ... + 18241.

It is an arithmetic number, because the mean of its divisors is an integer number (7432768).

Almost surely, 2^54781831 is an apocalyptic number.

54781831 is a deficient number, since it is larger than the sum of its proper divisors (4680313).

54781831 is a wasteful number, since it uses less digits than its factorization.

54781831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33321.

The product of its digits is 26880, while the sum is 37.

The square root of 54781831 is about 7401.4749205817. The cubic root of 54781831 is about 379.7917395302.

The spelling of 54781831 in words is "fifty-four million, seven hundred eighty-one thousand, eight hundred thirty-one".