55072031 has 6 divisors (see below), whose sum is σ = 64063440. Its totient is φ = 47204556.

The previous prime is 55072001. The next prime is 55072063. The reversal of 55072031 is 13027055.

55072031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55072031 - 2¹⁴ = 55055647 is a prime.

It is a super-2 number, since 2×55072031² = 6065857196929922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55071988 and 55072006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55072001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561911 + ... + 562008.

It is an arithmetic number, because the mean of its divisors is an integer number (10677240).

Almost surely, 2^55072031 is an apocalyptic number.

55072031 is a deficient number, since it is larger than the sum of its proper divisors (8991409).

55072031 is a wasteful number, since it uses less digits than its factorization.

55072031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123933 (or 1123926 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 55072031 is about 7421.0532271370. The cubic root of 55072031 is about 380.4611921191.

Adding to 55072031 its reverse (13027055), we get a palindrome (68099086).

The spelling of 55072031 in words is "fifty-five million, seventy-two thousand, thirty-one".