51843402 has 80 divisors (see below), whose sum is σ = 126846720. Its totient is φ = 15730848.

The previous prime is 51843367. The next prime is 51843413. The reversal of 51843402 is 20434815.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 216799 + ... + 217037.

It is an arithmetic number, because the mean of its divisors is an integer number (1585584).

Almost surely, 2^51843402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51843402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63423360).

51843402 is an abundant number, since it is smaller than the sum of its proper divisors (75003318).

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

51843402 is a wasteful number, since it uses less digits than its factorization.

51843402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 51843402 is about 7200.2362461242. The cubic root of 51843402 is about 372.8760570214.

The spelling of 51843402 in words is "fifty-one million, eight hundred forty-three thousand, four hundred two".