51483191 has 4 divisors (see below), whose sum is σ = 54511632. Its totient is φ = 48454752.

The previous prime is 51483181. The next prime is 51483203. The reversal of 51483191 is 19138415.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51483191 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 (51483101) 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, 1514195 + ... + 1514228.

It is an arithmetic number, because the mean of its divisors is an integer number (13627908).

Almost surely, 2^51483191 is an apocalyptic number.

51483191 is a deficient number, since it is larger than the sum of its proper divisors (3028441).

51483191 is a wasteful number, since it uses less digits than its factorization.

51483191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028440.

The product of its digits is 4320, while the sum is 32.

The square root of 51483191 is about 7175.1788131028. The cubic root of 51483191 is about 372.0104609345.

The spelling of 51483191 in words is "fifty-one million, four hundred eighty-three thousand, one hundred ninety-one".