51846491 has 4 divisors (see below), whose sum is σ = 51860952. Its totient is φ = 51832032.

The previous prime is 51846469. The next prime is 51846503. The reversal of 51846491 is 19464815.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51846491 - 2¹⁰ = 51845467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51846391) 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, 2636 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (12965238).

Almost surely, 2^51846491 is an apocalyptic number.

51846491 is a deficient number, since it is larger than the sum of its proper divisors (14461).

51846491 is an equidigital number, since it uses as much as digits as its factorization.

51846491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14460.

The product of its digits is 34560, while the sum is 38.

The square root of 51846491 is about 7200.4507497795. The cubic root of 51846491 is about 372.8834626006.

The spelling of 51846491 in words is "fifty-one million, eight hundred forty-six thousand, four hundred ninety-one".