55133541 has 14 divisors (see below), whose sum is σ = 82663590. Its totient is φ = 36755208.

The previous prime is 55133513. The next prime is 55133549. The reversal of 55133541 is 14533155.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 2916 = 7425^2 + 54^2 .

It is not a de Polignac number, because 55133541 - 2⁷ = 55133413 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133549) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 37086 + ... + 38543.

Almost surely, 2^55133541 is an apocalyptic number.

It is an amenable number.

55133541 is a deficient number, since it is larger than the sum of its proper divisors (27530049).

55133541 is an frugal number, since it uses more digits than its factorization.

55133541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75647 (or 75632 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 55133541 is about 7425.1963610399. The cubic root of 55133541 is about 380.6027852307.

Adding to 55133541 its reverse (14533155), we get a palindrome (69666696).

The spelling of 55133541 in words is "fifty-five million, one hundred thirty-three thousand, five hundred forty-one".