55085943 has 16 divisors (see below), whose sum is σ = 83609856. Its totient is φ = 31933440.

The previous prime is 55085939. The next prime is 55085957. The reversal of 55085943 is 34958055.

It is not a de Polignac number, because 55085943 - 2² = 55085939 is a prime.

It is a super-2 number, since 2×55085943² = 6068922232398498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55085983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35530 + ... + 37047.

It is an arithmetic number, because the mean of its divisors is an integer number (5225616).

Almost surely, 2^55085943 is an apocalyptic number.

55085943 is a deficient number, since it is larger than the sum of its proper divisors (28523913).

55085943 is a wasteful number, since it uses less digits than its factorization.

55085943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72614.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 55085943 is about 7421.9905012065. The cubic root of 55085943 is about 380.4932261079.

The spelling of 55085943 in words is "fifty-five million, eighty-five thousand, nine hundred forty-three".