51137133 has 8 divisors (see below), whose sum is σ = 68786688. Its totient is φ = 33789504.

The previous prime is 51137117. The next prime is 51137143. The reversal of 51137133 is 33173115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51137133 - 2⁴ = 51137117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51137143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75085 + ... + 75762.

It is an arithmetic number, because the mean of its divisors is an integer number (8598336).

Almost surely, 2^51137133 is an apocalyptic number.

It is an amenable number.

51137133 is a deficient number, since it is larger than the sum of its proper divisors (17649555).

51137133 is a wasteful number, since it uses less digits than its factorization.

51137133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150963.

The product of its digits is 945, while the sum is 24.

The square root of 51137133 is about 7151.0232134989. The cubic root of 51137133 is about 371.1750638355.

It can be divided in two parts, 5113 and 7133, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 51137133 in words is "fifty-one million, one hundred thirty-seven thousand, one hundred thirty-three".