55112639 has 2 divisors, whose sum is σ = 55112640. Its totient is φ = 55112638.

The previous prime is 55112611. The next prime is 55112653. The reversal of 55112639 is 93621155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55112639 is a 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 (55112039) 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, 27556319 + 27556320.

It is an arithmetic number, because the mean of its divisors is an integer number (27556320).

Almost surely, 2^55112639 is an apocalyptic number.

55112639 is a deficient number, since it is larger than the sum of its proper divisors (1).

55112639 is an equidigital number, since it uses as much as digits as its factorization.

55112639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 55112639 is about 7423.7887227480. The cubic root of 55112639 is about 380.5546816334.

The spelling of 55112639 in words is "fifty-five million, one hundred twelve thousand, six hundred thirty-nine".