51838133 has 4 divisors (see below), whose sum is σ = 52941120. Its totient is φ = 50735148.

The previous prime is 51838123. The next prime is 51838181. The reversal of 51838133 is 33183815.

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 51838133 - 2⁶ = 51838069 is a prime.

It is a Duffinian number.

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 51838133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51838123) 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, 551423 + ... + 551516.

It is an arithmetic number, because the mean of its divisors is an integer number (13235280).

Almost surely, 2^51838133 is an apocalyptic number.

It is an amenable number.

51838133 is a deficient number, since it is larger than the sum of its proper divisors (1102987).

51838133 is a wasteful number, since it uses less digits than its factorization.

51838133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102986.

The product of its digits is 8640, while the sum is 32.

The square root of 51838133 is about 7199.8703460549. The cubic root of 51838133 is about 372.8634244238.

The spelling of 51838133 in words is "fifty-one million, eight hundred thirty-eight thousand, one hundred thirty-three".