55244031 has 4 divisors (see below), whose sum is σ = 73658712. Its totient is φ = 36829352.

The previous prime is 55244027. The next prime is 55244047. The reversal of 55244031 is 13044255.

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 55244031 - 2² = 55244027 is a prime.

It is a super-2 number, since 2×55244031² = 6103805922257922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55243992 and 55244010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55244081) 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, 9207336 + ... + 9207341.

It is an arithmetic number, because the mean of its divisors is an integer number (18414678).

Almost surely, 2^55244031 is an apocalyptic number.

55244031 is a deficient number, since it is larger than the sum of its proper divisors (18414681).

55244031 is a wasteful number, since it uses less digits than its factorization.

55244031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18414680.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 55244031 is about 7432.6328444233. The cubic root of 55244031 is about 380.8568637241.

Adding to 55244031 its reverse (13044255), we get a palindrome (68288286).

The spelling of 55244031 in words is "fifty-five million, two hundred forty-four thousand, thirty-one".