55133135 has 4 divisors (see below), whose sum is σ = 66159768. Its totient is φ = 44106504.

The previous prime is 55133131. The next prime is 55133137. The reversal of 55133135 is 53133155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55133135 - 2² = 55133131 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 (55133131) 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, 5513309 + ... + 5513318.

It is an arithmetic number, because the mean of its divisors is an integer number (16539942).

Almost surely, 2^55133135 is an apocalyptic number.

55133135 is a deficient number, since it is larger than the sum of its proper divisors (11026633).

55133135 is a wasteful number, since it uses less digits than its factorization.

55133135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026632.

The product of its digits is 3375, while the sum is 26.

The square root of 55133135 is about 7425.1690216452. The cubic root of 55133135 is about 380.6018509832.

The spelling of 55133135 in words is "fifty-five million, one hundred thirty-three thousand, one hundred thirty-five".