51375265 has 8 divisors (see below), whose sum is σ = 62570880. Its totient is φ = 40486512.

The previous prime is 51375263. The next prime is 51375271. The reversal of 51375265 is 56257315.

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 51375265 - 2¹ = 51375263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51375265.

It is not an unprimeable number, because it can be changed into a prime (51375263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76345 + ... + 77014.

It is an arithmetic number, because the mean of its divisors is an integer number (7821360).

Almost surely, 2^51375265 is an apocalyptic number.

It is an amenable number.

51375265 is a deficient number, since it is larger than the sum of its proper divisors (11195615).

51375265 is a wasteful number, since it uses less digits than its factorization.

51375265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153431.

The product of its digits is 31500, while the sum is 34.

The square root of 51375265 is about 7167.6540792647. The cubic root of 51375265 is about 371.7503262600.

The spelling of 51375265 in words is "fifty-one million, three hundred seventy-five thousand, two hundred sixty-five".