55146133 has 4 divisors (see below), whose sum is σ = 63024160. Its totient is φ = 47268108.

The previous prime is 55146131. The next prime is 55146163. The reversal of 55146133 is 33164155.

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.

It is a cyclic number.

It is not a de Polignac number, because 55146133 - 2¹ = 55146131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55146131) 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, 3939003 + ... + 3939016.

It is an arithmetic number, because the mean of its divisors is an integer number (15756040).

Almost surely, 2^55146133 is an apocalyptic number.

It is an amenable number.

55146133 is a deficient number, since it is larger than the sum of its proper divisors (7878027).

55146133 is an equidigital number, since it uses as much as digits as its factorization.

55146133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7878026.

The product of its digits is 5400, while the sum is 28.

The square root of 55146133 is about 7426.0442363347. The cubic root of 55146133 is about 380.6317584315.

The spelling of 55146133 in words is "fifty-five million, one hundred forty-six thousand, one hundred thirty-three".