51427645 has 8 divisors (see below), whose sum is σ = 62759520. Its totient is φ = 40444560.

The previous prime is 51427639. The next prime is 51427679. The reversal of 51427645 is 54672415.

51427645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51427645 - 2⁹ = 51427133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51427645.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 86871 + ... + 87460.

It is an arithmetic number, because the mean of its divisors is an integer number (7844940).

Almost surely, 2^51427645 is an apocalyptic number.

It is an amenable number.

51427645 is a deficient number, since it is larger than the sum of its proper divisors (11331875).

51427645 is a wasteful number, since it uses less digits than its factorization.

51427645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174395.

The product of its digits is 33600, while the sum is 34.

The square root of 51427645 is about 7171.3070635694. The cubic root of 51427645 is about 371.8766235364.

The spelling of 51427645 in words is "fifty-one million, four hundred twenty-seven thousand, six hundred forty-five".