51193265 has 8 divisors (see below), whose sum is σ = 63550440. Its totient is φ = 39542272.

The previous prime is 51193249. The next prime is 51193279. The reversal of 51193265 is 56239115.

It can be written as a sum of positive squares in 4 ways, for example, as 4844401 + 46348864 = 2201^2 + 6808^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51193265 - 2⁴ = 51193249 is a prime.

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, 176384 + ... + 176673.

It is an arithmetic number, because the mean of its divisors is an integer number (7943805).

Almost surely, 2^51193265 is an apocalyptic number.

It is an amenable number.

51193265 is a deficient number, since it is larger than the sum of its proper divisors (12357175).

51193265 is a wasteful number, since it uses less digits than its factorization.

51193265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353091.

The product of its digits is 8100, while the sum is 32.

The square root of 51193265 is about 7154.9468900894. The cubic root of 51193265 is about 371.3108241517.

The spelling of 51193265 in words is "fifty-one million, one hundred ninety-three thousand, two hundred sixty-five".