51363971 has 8 divisors (see below), whose sum is σ = 51817104. Its totient is φ = 50913280.

The previous prime is 51363967. The next prime is 51363989. The reversal of 51363971 is 17936315.

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 51363971 - 2² = 51363967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51368971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79811 + ... + 80451.

It is an arithmetic number, because the mean of its divisors is an integer number (6477138).

Almost surely, 2^51363971 is an apocalyptic number.

51363971 is a deficient number, since it is larger than the sum of its proper divisors (453133).

51363971 is a wasteful number, since it uses less digits than its factorization.

51363971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its digits is 17010, while the sum is 35.

The square root of 51363971 is about 7166.8661910210. The cubic root of 51363971 is about 371.7230832156.

The spelling of 51363971 in words is "fifty-one million, three hundred sixty-three thousand, nine hundred seventy-one".