51773265 has 48 divisors (see below), whose sum is σ = 94021200. Its totient is φ = 26320896.

The previous prime is 51773263. The next prime is 51773269. The reversal of 51773265 is 56237715.

It can be written as a sum of positive squares in 8 ways, for example, as 1306449 + 50466816 = 1143^2 + 7104^2 .

It is not a de Polignac number, because 51773265 - 2¹ = 51773263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51773261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126381 + ... + 126789.

It is an arithmetic number, because the mean of its divisors is an integer number (1958775).

Almost surely, 2^51773265 is an apocalyptic number.

It is an amenable number.

51773265 is a deficient number, since it is larger than the sum of its proper divisors (42247935).

51773265 is a wasteful number, since it uses less digits than its factorization.

51773265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 543 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 51773265 is about 7195.3641325509. The cubic root of 51773265 is about 372.7078311115.

The spelling of 51773265 in words is "fifty-one million, seven hundred seventy-three thousand, two hundred sixty-five".