51845602 has 4 divisors (see below), whose sum is σ = 77768406. Its totient is φ = 25922800.

The previous prime is 51845579. The next prime is 51845603. The reversal of 51845602 is 20654815.

51845602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 13169641 = 6219^2 + 3629^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51845603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12961399 + ... + 12961402.

Almost surely, 2^51845602 is an apocalyptic number.

51845602 is a deficient number, since it is larger than the sum of its proper divisors (25922804).

51845602 is a wasteful number, since it uses less digits than its factorization.

51845602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25922803.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 51845602 is about 7200.3890172684. The cubic root of 51845602 is about 372.8813313391.

The spelling of 51845602 in words is "fifty-one million, eight hundred forty-five thousand, six hundred two".