55875091 has 4 divisors (see below), whose sum is σ = 56929392. Its totient is φ = 54820792.

The previous prime is 55875089. The next prime is 55875097. The reversal of 55875091 is 19057855.

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 55875091 - 2¹ = 55875089 is a prime.

It is a super-3 number, since 3×55875091³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55875097) 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, 527071 + ... + 527176.

It is an arithmetic number, because the mean of its divisors is an integer number (14232348).

Almost surely, 2^55875091 is an apocalyptic number.

55875091 is a deficient number, since it is larger than the sum of its proper divisors (1054301).

55875091 is a wasteful number, since it uses less digits than its factorization.

55875091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054300.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 55875091 is about 7474.9642808511. The cubic root of 55875091 is about 382.3015696537.

The spelling of 55875091 in words is "fifty-five million, eight hundred seventy-five thousand, ninety-one".