55851839 has 8 divisors (see below), whose sum is σ = 57378240. Its totient is φ = 54339616.

The previous prime is 55851827. The next prime is 55851847. The reversal of 55851839 is 93815855.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55851839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55851839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55851899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4697 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (7172280).

Almost surely, 2^55851839 is an apocalyptic number.

55851839 is a deficient number, since it is larger than the sum of its proper divisors (1526401).

55851839 is a wasteful number, since it uses less digits than its factorization.

55851839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7089.

The product of its digits is 216000, while the sum is 44.

The square root of 55851839 is about 7473.4087938504. The cubic root of 55851839 is about 382.2485316524.

The spelling of 55851839 in words is "fifty-five million, eight hundred fifty-one thousand, eight hundred thirty-nine".