55332031 has 2 divisors, whose sum is σ = 55332032. Its totient is φ = 55332030.

The previous prime is 55331963. The next prime is 55332037. The reversal of 55332031 is 13023355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55332031 - 2¹¹ = 55329983 is a prime.

It is a super-2 number, since 2×55332031² = 6123267309169922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55331993 and 55332011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55332037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27666015 + 27666016.

It is an arithmetic number, because the mean of its divisors is an integer number (27666016).

Almost surely, 2^55332031 is an apocalyptic number.

55332031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55332031 is an equidigital number, since it uses as much as digits as its factorization.

55332031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 55332031 is about 7438.5503291972. The cubic root of 55332031 is about 381.0589828382.

Adding to 55332031 its reverse (13023355), we get a palindrome (68355386).

The spelling of 55332031 in words is "fifty-five million, three hundred thirty-two thousand, thirty-one".