54109531 has 4 divisors (see below), whose sum is σ = 61839472. Its totient is φ = 46379592.

The previous prime is 54109529. The next prime is 54109541. The reversal of 54109531 is 13590145.

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

It is not a de Polignac number, because 54109531 - 2¹ = 54109529 is a prime.

It is a super-2 number, since 2×54109531² = 5855682690079922, which contains 22 as substring.

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 54109531.

It is not an unprimeable number, because it can be changed into a prime (54109541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864960 + ... + 3864973.

It is an arithmetic number, because the mean of its divisors is an integer number (15459868).

Almost surely, 2^54109531 is an apocalyptic number.

54109531 is a deficient number, since it is larger than the sum of its proper divisors (7729941).

54109531 is an equidigital number, since it uses as much as digits as its factorization.

54109531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729940.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 54109531 is about 7355.9180936169. The cubic root of 54109531 is about 378.2316986963.

Adding to 54109531 its reverse (13590145), we get a palindrome (67699676).

It can be divided in two parts, 5410 and 9531, that added together give a palindrome (14941).

The spelling of 54109531 in words is "fifty-four million, one hundred nine thousand, five hundred thirty-one".