51276245 has 4 divisors (see below), whose sum is σ = 61531500. Its totient is φ = 41020992.

The previous prime is 51276217. The next prime is 51276257. The reversal of 51276245 is 54267215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17380561 + 33895684 = 4169^2 + 5822^2 .

It is a cyclic number.

It is not a de Polignac number, because 51276245 - 2¹² = 51272149 is a prime.

It is a super-3 number, since 3×51276245³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5127620 + ... + 5127629.

It is an arithmetic number, because the mean of its divisors is an integer number (15382875).

Almost surely, 2^51276245 is an apocalyptic number.

It is an amenable number.

51276245 is a deficient number, since it is larger than the sum of its proper divisors (10255255).

51276245 is a wasteful number, since it uses less digits than its factorization.

51276245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10255254.

The product of its digits is 16800, while the sum is 32.

The square root of 51276245 is about 7160.7433273369. The cubic root of 51276245 is about 371.5113371138.

The spelling of 51276245 in words is "fifty-one million, two hundred seventy-six thousand, two hundred forty-five".