51776385 has 8 divisors (see below), whose sum is σ = 82842240. Its totient is φ = 27614064.

The previous prime is 51776377. The next prime is 51776393. The reversal of 51776385 is 58367715.

It is an interprime number because it is at equal distance from previous prime (51776377) and next prime (51776393).

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

It is not a de Polignac number, because 51776385 - 2³ = 51776377 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725865 + ... + 1725894.

It is an arithmetic number, because the mean of its divisors is an integer number (10355280).

Almost surely, 2^51776385 is an apocalyptic number.

It is an amenable number.

51776385 is a deficient number, since it is larger than the sum of its proper divisors (31065855).

51776385 is a wasteful number, since it uses less digits than its factorization.

51776385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451767.

The product of its digits is 176400, while the sum is 42.

The square root of 51776385 is about 7195.5809355465. The cubic root of 51776385 is about 372.7153177623.

The spelling of 51776385 in words is "fifty-one million, seven hundred seventy-six thousand, three hundred eighty-five".