51396271 has 4 divisors (see below), whose sum is σ = 51413544. Its totient is φ = 51379000.

The previous prime is 51396269. The next prime is 51396299. The reversal of 51396271 is 17269315.

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 51396271 - 2¹ = 51396269 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 (51396211) 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, 2905 + ... + 10546.

It is an arithmetic number, because the mean of its divisors is an integer number (12853386).

Almost surely, 2^51396271 is an apocalyptic number.

51396271 is a deficient number, since it is larger than the sum of its proper divisors (17273).

51396271 is a wasteful number, since it uses less digits than its factorization.

51396271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17272.

The product of its digits is 11340, while the sum is 34.

The square root of 51396271 is about 7169.1192625036. The cubic root of 51396271 is about 371.8009856795.

The spelling of 51396271 in words is "fifty-one million, three hundred ninety-six thousand, two hundred seventy-one".