51445395 has 16 divisors (see below), whose sum is σ = 91458720. Its totient is φ = 27437472.

The previous prime is 51445357. The next prime is 51445421. The reversal of 51445395 is 59354415.

51445395 is a `hidden beast` number, since 514 + 4 + 53 + 95 = 666.

It is not a de Polignac number, because 51445395 - 2¹⁶ = 51379859 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190404 + ... + 190673.

It is an arithmetic number, because the mean of its divisors is an integer number (5716170).

Almost surely, 2^51445395 is an apocalyptic number.

51445395 is a deficient number, since it is larger than the sum of its proper divisors (40013325).

51445395 is a wasteful number, since it uses less digits than its factorization.

51445395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381091 (or 381085 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 51445395 is about 7172.5445275718. The cubic root of 51445395 is about 371.9194024141.

The spelling of 51445395 in words is "fifty-one million, four hundred forty-five thousand, three hundred ninety-five".