55091773 has 8 divisors (see below), whose sum is σ = 63263520. Its totient is φ = 47447280.

The previous prime is 55091767. The next prime is 55091783. The reversal of 55091773 is 37719055.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55091773 - 2²¹ = 52994621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55091753) 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, 131590 + ... + 132007.

It is an arithmetic number, because the mean of its divisors is an integer number (7907940).

Almost surely, 2^55091773 is an apocalyptic number.

It is an amenable number.

55091773 is a deficient number, since it is larger than the sum of its proper divisors (8171747).

55091773 is a wasteful number, since it uses less digits than its factorization.

55091773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263627.

The product of its (nonzero) digits is 33075, while the sum is 37.

The square root of 55091773 is about 7422.3832425980. The cubic root of 55091773 is about 380.5066487534.

The spelling of 55091773 in words is "fifty-five million, ninety-one thousand, seven hundred seventy-three".