54240031 has 4 divisors (see below), whose sum is σ = 54388192. Its totient is φ = 54091872.

The previous prime is 54240019. The next prime is 54240073. The reversal of 54240031 is 13004245.

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

It is a cyclic number.

It is not a de Polignac number, because 54240031 - 2⁹ = 54239519 is a prime.

It is a super-2 number, since 2×54240031² = 5883961925761922, 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 = 54239990 and 54240008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54240001) 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, 73530 + ... + 74263.

It is an arithmetic number, because the mean of its divisors is an integer number (13597048).

Almost surely, 2^54240031 is an apocalyptic number.

54240031 is a deficient number, since it is larger than the sum of its proper divisors (148161).

54240031 is a wasteful number, since it uses less digits than its factorization.

54240031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148160.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 54240031 is about 7364.7831604196. The cubic root of 54240031 is about 378.5355244594.

Adding to 54240031 its reverse (13004245), we get a palindrome (67244276).

The spelling of 54240031 in words is "fifty-four million, two hundred forty thousand, thirty-one".