55357733 has 4 divisors (see below), whose sum is σ = 55979820. Its totient is φ = 54735648.

The previous prime is 55357717. The next prime is 55357739. The reversal of 55357733 is 33775355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33775355 = 5 ⋅6755071.

It can be written as a sum of positive squares in 2 ways, for example, as 28494244 + 26863489 = 5338^2 + 5183^2 .

It is a cyclic number.

It is not a de Polignac number, because 55357733 - 2⁴ = 55357717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55357739) 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, 310910 + ... + 311087.

It is an arithmetic number, because the mean of its divisors is an integer number (13994955).

Almost surely, 2^55357733 is an apocalyptic number.

It is an amenable number.

55357733 is a deficient number, since it is larger than the sum of its proper divisors (622087).

55357733 is an equidigital number, since it uses as much as digits as its factorization.

55357733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622086.

The product of its digits is 165375, while the sum is 38.

The square root of 55357733 is about 7440.2777501919. The cubic root of 55357733 is about 381.1179749611.

The spelling of 55357733 in words is "fifty-five million, three hundred fifty-seven thousand, seven hundred thirty-three".