51493277 has 8 divisors (see below), whose sum is σ = 56501280. Its totient is φ = 46539760.

The previous prime is 51493271. The next prime is 51493279. The reversal of 51493277 is 77239415.

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

It is a cyclic number.

It is not a de Polignac number, because 51493277 - 2⁴ = 51493261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51493277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51493271) 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, 11627 + ... + 15432.

It is an arithmetic number, because the mean of its divisors is an integer number (7062660).

Almost surely, 2^51493277 is an apocalyptic number.

It is an amenable number.

51493277 is a deficient number, since it is larger than the sum of its proper divisors (5008003).

51493277 is a wasteful number, since it uses less digits than its factorization.

51493277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27243.

The product of its digits is 52920, while the sum is 38.

The square root of 51493277 is about 7175.8816183100. The cubic root of 51493277 is about 372.0347526981.

The spelling of 51493277 in words is "fifty-one million, four hundred ninety-three thousand, two hundred seventy-seven".