55527839 has 4 divisors (see below), whose sum is σ = 55565640. Its totient is φ = 55490040.

The previous prime is 55527833. The next prime is 55527841. The reversal of 55527839 is 93872555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55527839 - 2⁸ = 55527583 is a prime.

It is a Duffinian number.

55527839 is a Rhonda number in base 10.

Its product of digits (378000) is a multiple of the sum of its prime divisors (37800).

It is a self number, because there is not a number n which added to its sum of digits gives 55527839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55527833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16604 + ... + 19665.

It is an arithmetic number, because the mean of its divisors is an integer number (13891410).

Almost surely, 2^55527839 is an apocalyptic number.

55527839 is a deficient number, since it is larger than the sum of its proper divisors (37801).

55527839 is a wasteful number, since it uses less digits than its factorization.

55527839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37800.

The product of its digits is 378000, while the sum is 44.

The square root of 55527839 is about 7451.7004099736. The cubic root of 55527839 is about 381.5079485572.

The spelling of 55527839 in words is "fifty-five million, five hundred twenty-seven thousand, eight hundred thirty-nine".