51834487 has 4 divisors (see below), whose sum is σ = 51914520. Its totient is φ = 51754456.

The previous prime is 51834469. The next prime is 51834491. The reversal of 51834487 is 78443815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78443815 = 5 ⋅15688763.

It is a cyclic number.

It is not a de Polignac number, because 51834487 - 2⁷ = 51834359 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 (51834427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39037 + ... + 40342.

It is an arithmetic number, because the mean of its divisors is an integer number (12978630).

Almost surely, 2^51834487 is an apocalyptic number.

51834487 is a deficient number, since it is larger than the sum of its proper divisors (80033).

51834487 is an equidigital number, since it uses as much as digits as its factorization.

51834487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80032.

The product of its digits is 107520, while the sum is 40.

The square root of 51834487 is about 7199.6171425986. The cubic root of 51834487 is about 372.8546825200.

The spelling of 51834487 in words is "fifty-one million, eight hundred thirty-four thousand, four hundred eighty-seven".