55113631 has 2 divisors, whose sum is σ = 55113632. Its totient is φ = 55113630.

The previous prime is 55113599. The next prime is 55113671. The reversal of 55113631 is 13631155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55113631 - 2⁵ = 55113599 is a prime.

It is a super-2 number, since 2×55113631² = 6075024644008322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55113596 and 55113605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55113671) 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, 27556815 + 27556816.

It is an arithmetic number, because the mean of its divisors is an integer number (27556816).

Almost surely, 2^55113631 is an apocalyptic number.

55113631 is a deficient number, since it is larger than the sum of its proper divisors (1).

55113631 is an equidigital number, since it uses as much as digits as its factorization.

55113631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 55113631 is about 7423.8555346935. The cubic root of 55113631 is about 380.5569648845.

Adding to 55113631 its reverse (13631155), we get a palindrome (68744786).

The spelling of 55113631 in words is "fifty-five million, one hundred thirteen thousand, six hundred thirty-one".