51376445 has 4 divisors (see below), whose sum is σ = 61651740. Its totient is φ = 41101152.

The previous prime is 51376439. The next prime is 51376447. The reversal of 51376445 is 54467315.

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 33895684 + 17480761 = 5822^2 + 4181^2 .

It is a cyclic number.

It is not a de Polignac number, because 51376445 - 2⁸ = 51376189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51376447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5137640 + ... + 5137649.

It is an arithmetic number, because the mean of its divisors is an integer number (15412935).

Almost surely, 2^51376445 is an apocalyptic number.

It is an amenable number.

51376445 is a deficient number, since it is larger than the sum of its proper divisors (10275295).

51376445 is a wasteful number, since it uses less digits than its factorization.

51376445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275294.

The product of its digits is 50400, while the sum is 35.

The square root of 51376445 is about 7167.7363930323. The cubic root of 51376445 is about 371.7531723899.

The spelling of 51376445 in words is "fifty-one million, three hundred seventy-six thousand, four hundred forty-five".