55520133 has 8 divisors (see below), whose sum is σ = 74517696. Its totient is φ = 36768000.

The previous prime is 55520107. The next prime is 55520149. The reversal of 55520133 is 33102555.

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

It is not a de Polignac number, because 55520133 - 2⁹ = 55519621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520233) 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, 60828 + ... + 61733.

It is an arithmetic number, because the mean of its divisors is an integer number (9314712).

Almost surely, 2^55520133 is an apocalyptic number.

It is an amenable number.

55520133 is a deficient number, since it is larger than the sum of its proper divisors (18997563).

55520133 is a wasteful number, since it uses less digits than its factorization.

55520133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122715.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 55520133 is about 7451.1833288411. The cubic root of 55520133 is about 381.4902995346.

Adding to 55520133 its reverse (33102555), we get a palindrome (88622688).

The spelling of 55520133 in words is "fifty-five million, five hundred twenty thousand, one hundred thirty-three".