51770065 has 16 divisors (see below), whose sum is σ = 63835200. Its totient is φ = 40283712.

The previous prime is 51770063. The next prime is 51770071. The reversal of 51770065 is 56007715.

It is a cyclic number.

It is not a de Polignac number, because 51770065 - 2¹ = 51770063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51770063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83326 + ... + 83944.

It is an arithmetic number, because the mean of its divisors is an integer number (3989700).

Almost surely, 2^51770065 is an apocalyptic number.

It is an amenable number.

51770065 is a deficient number, since it is larger than the sum of its proper divisors (12065135).

51770065 is a wasteful number, since it uses less digits than its factorization.

51770065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 51770065 is about 7195.1417637181. The cubic root of 51770065 is about 372.7001521828.

The spelling of 51770065 in words is "fifty-one million, seven hundred seventy thousand, sixty-five".