51846539 has 4 divisors (see below), whose sum is σ = 53519040. Its totient is φ = 50174040.

The previous prime is 51846533. The next prime is 51846541. The reversal of 51846539 is 93564815.

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

It is a cyclic number.

It is not a de Polignac number, because 51846539 - 2¹⁶ = 51781003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51846496 and 51846505.

It is not an unprimeable number, because it can be changed into a prime (51846533) 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, 836204 + ... + 836265.

It is an arithmetic number, because the mean of its divisors is an integer number (13379760).

Almost surely, 2^51846539 is an apocalyptic number.

51846539 is a deficient number, since it is larger than the sum of its proper divisors (1672501).

51846539 is a wasteful number, since it uses less digits than its factorization.

51846539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672500.

The product of its digits is 129600, while the sum is 41.

The square root of 51846539 is about 7200.4540829034. The cubic root of 51846539 is about 372.8835776737.

The spelling of 51846539 in words is "fifty-one million, eight hundred forty-six thousand, five hundred thirty-nine".