55353031 has 2 divisors, whose sum is σ = 55353032. Its totient is φ = 55353030.

The previous prime is 55353029. The next prime is 55353049. The reversal of 55353031 is 13035355.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55353031 - 2¹ = 55353029 is a prime.

It is a super-2 number, since 2×55353031² = 6127916081773922, which contains 22 as substring.

Together with 55353029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55352987 and 55353005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55323031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27676515 + 27676516.

It is an arithmetic number, because the mean of its divisors is an integer number (27676516).

Almost surely, 2^55353031 is an apocalyptic number.

55353031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55353031 is an equidigital number, since it uses as much as digits as its factorization.

55353031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 55353031 is about 7439.9617606544. The cubic root of 55353031 is about 381.1071841323.

Adding to 55353031 its reverse (13035355), we get a palindrome (68388386).

The spelling of 55353031 in words is "fifty-five million, three hundred fifty-three thousand, thirty-one".