55012031 has 2 divisors, whose sum is σ = 55012032. Its totient is φ = 55012030.

The previous prime is 55012003. The next prime is 55012063. The reversal of 55012031 is 13021055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55012031 - 2⁶ = 55011967 is a prime.

It is a super-2 number, since 2×55012031² = 6052647109489922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55012831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27506015 + 27506016.

It is an arithmetic number, because the mean of its divisors is an integer number (27506016).

Almost surely, 2^55012031 is an apocalyptic number.

55012031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55012031 is an equidigital number, since it uses as much as digits as its factorization.

55012031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 55012031 is about 7417.0095725973. The cubic root of 55012031 is about 380.3229733400.

Adding to 55012031 its reverse (13021055), we get a palindrome (68033086).

The spelling of 55012031 in words is "fifty-five million, twelve thousand, thirty-one".