51849791 has 12 divisors (see below), whose sum is σ = 60438240. Its totient is φ = 44352000.

The previous prime is 51849773. The next prime is 51849793. The reversal of 51849791 is 19794815.

It is not a de Polignac number, because 51849791 - 2¹⁰ = 51848767 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 (51849793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36095 + ... + 37503.

It is an arithmetic number, because the mean of its divisors is an integer number (5036520).

Almost surely, 2^51849791 is an apocalyptic number.

51849791 is a deficient number, since it is larger than the sum of its proper divisors (8588449).

51849791 is a wasteful number, since it uses less digits than its factorization.

51849791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2167 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 51849791 is about 7200.6798984540. The cubic root of 51849791 is about 372.8913737070.

The spelling of 51849791 in words is "fifty-one million, eight hundred forty-nine thousand, seven hundred ninety-one".