51800260 has 12 divisors (see below), whose sum is σ = 108780588. Its totient is φ = 20720096.

The previous prime is 51800257. The next prime is 51800263. The reversal of 51800260 is 6200815.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51800257) and next prime (51800263).

It can be written as a sum of positive squares in 2 ways, for example, as 25421764 + 26378496 = 5042^2 + 5136^2 .

It is not an unprimeable number, because it can be changed into a prime (51800263) 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 3 ways as a sum of consecutive naturals, for example, 1294987 + ... + 1295026.

It is an arithmetic number, because the mean of its divisors is an integer number (9065049).

Almost surely, 2^51800260 is an apocalyptic number.

It is an amenable number.

51800260 is an abundant number, since it is smaller than the sum of its proper divisors (56980328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51800260 is a wasteful number, since it uses less digits than its factorization.

51800260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590022 (or 2590020 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 51800260 is about 7197.2397486814. The cubic root of 51800260 is about 372.7725974842.

The spelling of 51800260 in words is "fifty-one million, eight hundred thousand, two hundred sixty".