55895819 has 12 divisors (see below), whose sum is σ = 67850064. Its totient is φ = 45826704.

The previous prime is 55895809. The next prime is 55895839. The reversal of 55895819 is 91859855.

It is not a de Polignac number, because 55895819 - 2⁴ = 55895803 is a prime.

It is a super-2 number, since 2×55895819² = 6248685163361522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55895809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23672 + ... + 25925.

It is an arithmetic number, because the mean of its divisors is an integer number (5654172).

Almost surely, 2^55895819 is an apocalyptic number.

55895819 is a deficient number, since it is larger than the sum of its proper divisors (11954245).

55895819 is a wasteful number, since it uses less digits than its factorization.

55895819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49634 (or 49627 counting only the distinct ones).

The product of its digits is 648000, while the sum is 50.

The square root of 55895819 is about 7476.3506472075. The cubic root of 55895819 is about 382.3488379868.

The spelling of 55895819 in words is "fifty-five million, eight hundred ninety-five thousand, eight hundred nineteen".