55601839 has 2 divisors, whose sum is σ = 55601840. Its totient is φ = 55601838.

The previous prime is 55601831. The next prime is 55601851. The reversal of 55601839 is 93810655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55601839 - 2³ = 55601831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55601798 and 55601807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55601831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27800919 + 27800920.

It is an arithmetic number, because the mean of its divisors is an integer number (27800920).

Almost surely, 2^55601839 is an apocalyptic number.

55601839 is a deficient number, since it is larger than the sum of its proper divisors (1).

55601839 is an equidigital number, since it uses as much as digits as its factorization.

55601839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 55601839 is about 7456.6640664576. The cubic root of 55601839 is about 381.6773474083.

The spelling of 55601839 in words is "fifty-five million, six hundred one thousand, eight hundred thirty-nine".