55133406 has 16 divisors (see below), whose sum is σ = 122518800. Its totient is φ = 18377784.

The previous prime is 55133401. The next prime is 55133413. The reversal of 55133406 is 60433155.

55133406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55133406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510441 + ... + 510548.

It is an arithmetic number, because the mean of its divisors is an integer number (7657425).

Almost surely, 2^55133406 is an apocalyptic number.

55133406 is an abundant number, since it is smaller than the sum of its proper divisors (67385394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55133406 is a wasteful number, since it uses less digits than its factorization.

55133406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021000 (or 1020994 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 55133406 is about 7425.1872703656. The cubic root of 55133406 is about 380.6024745824.

The spelling of 55133406 in words is "fifty-five million, one hundred thirty-three thousand, four hundred six".