51840089 has 12 divisors (see below), whose sum is σ = 63852084. Its totient is φ = 41819904.

The previous prime is 51840083. The next prime is 51840101. The reversal of 51840089 is 98004815.

It can be written as a sum of positive squares in 2 ways, for example, as 45630025 + 6210064 = 6755^2 + 2492^2 .

It is not a de Polignac number, because 51840089 - 2²⁴ = 35062873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51840083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30284 + ... + 31949.

It is an arithmetic number, because the mean of its divisors is an integer number (5321007).

Almost surely, 2^51840089 is an apocalyptic number.

It is an amenable number.

51840089 is a deficient number, since it is larger than the sum of its proper divisors (12011995).

51840089 is a wasteful number, since it uses less digits than its factorization.

51840089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62264 (or 62257 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 51840089 is about 7200.0061805529. The cubic root of 51840089 is about 372.8681140968.

The spelling of 51840089 in words is "fifty-one million, eight hundred forty thousand, eighty-nine".