51633271 has 4 divisors (see below), whose sum is σ = 51772072. Its totient is φ = 51494472.

The previous prime is 51633269. The next prime is 51633287. The reversal of 51633271 is 17233615.

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 51633271 - 2¹ = 51633269 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 (51633251) 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, 68841 + ... + 69586.

It is an arithmetic number, because the mean of its divisors is an integer number (12943018).

Almost surely, 2^51633271 is an apocalyptic number.

51633271 is a deficient number, since it is larger than the sum of its proper divisors (138801).

51633271 is a wasteful number, since it uses less digits than its factorization.

51633271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138800.

The product of its digits is 3780, while the sum is 28.

The square root of 51633271 is about 7185.6294783408. The cubic root of 51633271 is about 372.3715960597.

Adding to 51633271 its reverse (17233615), we get a palindrome (68866886).

The spelling of 51633271 in words is "fifty-one million, six hundred thirty-three thousand, two hundred seventy-one".