51171479 has 8 divisors (see below), whose sum is σ = 54250560. Its totient is φ = 48100096.

The previous prime is 51171473. The next prime is 51171487. The reversal of 51171479 is 97417115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51171479 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 (51171473) 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, 17387 + ... + 20115.

It is an arithmetic number, because the mean of its divisors is an integer number (6781320).

Almost surely, 2^51171479 is an apocalyptic number.

51171479 is a deficient number, since it is larger than the sum of its proper divisors (3079081).

51171479 is a wasteful number, since it uses less digits than its factorization.

51171479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849.

The product of its digits is 8820, while the sum is 35.

The square root of 51171479 is about 7153.4242849142. The cubic root of 51171479 is about 371.2581445307.

The spelling of 51171479 in words is "fifty-one million, one hundred seventy-one thousand, four hundred seventy-nine".