55490333 has 4 divisors (see below), whose sum is σ = 55508160. Its totient is φ = 55472508.

The previous prime is 55490321. The next prime is 55490353. The reversal of 55490333 is 33309455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33309455 = 5 ⋅6661891.

It is a cyclic number.

It is not a de Polignac number, because 55490333 - 2²⁰ = 54441757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55490333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55490353) 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, 2885 + ... + 10922.

It is an arithmetic number, because the mean of its divisors is an integer number (13877040).

Almost surely, 2^55490333 is an apocalyptic number.

It is an amenable number.

55490333 is a deficient number, since it is larger than the sum of its proper divisors (17827).

55490333 is a wasteful number, since it uses less digits than its factorization.

55490333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 55490333 is about 7449.1833780623. The cubic root of 55490333 is about 381.4220333346.

Adding to 55490333 its reverse (33309455), we get a palindrome (88799788).

The spelling of 55490333 in words is "fifty-five million, four hundred ninety thousand, three hundred thirty-three".