51683191 has 24 divisors (see below), whose sum is σ = 63940320. Its totient is φ = 41573952.

The previous prime is 51683161. The next prime is 51683201. The reversal of 51683191 is 19138615.

It is not a de Polignac number, because 51683191 - 2¹⁹ = 51158903 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 (51683131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52086 + ... + 53068.

It is an arithmetic number, because the mean of its divisors is an integer number (2664180).

Almost surely, 2^51683191 is an apocalyptic number.

51683191 is a deficient number, since it is larger than the sum of its proper divisors (12257129).

51683191 is a wasteful number, since it uses less digits than its factorization.

51683191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1056 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The square root of 51683191 is about 7189.1022388056. The cubic root of 51683191 is about 372.4915626514.

The spelling of 51683191 in words is "fifty-one million, six hundred eighty-three thousand, one hundred ninety-one".