55151839 has 2 divisors, whose sum is σ = 55151840. Its totient is φ = 55151838.

The previous prime is 55151827. The next prime is 55151849. The reversal of 55151839 is 93815155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55151839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55151798 and 55151807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55151809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27575919 + 27575920.

It is an arithmetic number, because the mean of its divisors is an integer number (27575920).

Almost surely, 2^55151839 is an apocalyptic number.

55151839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55151839 is an equidigital number, since it uses as much as digits as its factorization.

55151839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 37.

The square root of 55151839 is about 7426.4284147900. The cubic root of 55151839 is about 380.6448860362.

The spelling of 55151839 in words is "fifty-five million, one hundred fifty-one thousand, eight hundred thirty-nine".