55133404 has 12 divisors (see below), whose sum is σ = 99091384. Its totient is φ = 26821584.

The previous prime is 55133401. The next prime is 55133413. The reversal of 55133404 is 40433155.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186114 + ... + 186409.

Almost surely, 2^55133404 is an apocalyptic number.

It is an amenable number.

55133404 is a deficient number, since it is larger than the sum of its proper divisors (43957980).

55133404 is a wasteful number, since it uses less digits than its factorization.

55133404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372564 (or 372562 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 55133404 is about 7425.1871356889. The cubic root of 55133404 is about 380.6024699802.

Adding to 55133404 its reverse (40433155), we get a palindrome (95566559).

The spelling of 55133404 in words is "fifty-five million, one hundred thirty-three thousand, four hundred four".