51407271 has 8 divisors (see below), whose sum is σ = 76158960. Its totient is φ = 34271496.

The previous prime is 51407267. The next prime is 51407273. The reversal of 51407271 is 17270415.

It is not a de Polignac number, because 51407271 - 2² = 51407267 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1903973 = 51407271 / (5 + 1 + 4 + 0 + 7 + 2 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51407273) 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, 951960 + ... + 952013.

It is an arithmetic number, because the mean of its divisors is an integer number (9519870).

Almost surely, 2^51407271 is an apocalyptic number.

51407271 is a deficient number, since it is larger than the sum of its proper divisors (24751689).

51407271 is a wasteful number, since it uses less digits than its factorization.

51407271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903982 (or 1903976 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 51407271 is about 7169.8864007737. The cubic root of 51407271 is about 371.8275084798.

Adding to 51407271 its reverse (17270415), we get a palindrome (68677686).

The spelling of 51407271 in words is "fifty-one million, four hundred seven thousand, two hundred seventy-one".