51446345 has 8 divisors (see below), whose sum is σ = 61790280. Its totient is φ = 41120640.

The previous prime is 51446333. The next prime is 51446347. The reversal of 51446345 is 54364415.

It can be written as a sum of positive squares in 4 ways, for example, as 17480761 + 33965584 = 4181^2 + 5828^2 .

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

It is not a de Polignac number, because 51446345 - 2¹⁰ = 51445321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51446347) 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, 2711 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (7723785).

Almost surely, 2^51446345 is an apocalyptic number.

It is an amenable number.

51446345 is a deficient number, since it is larger than the sum of its proper divisors (10343935).

51446345 is a wasteful number, since it uses less digits than its factorization.

51446345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9115.

The product of its digits is 28800, while the sum is 32.

The square root of 51446345 is about 7172.6107520205. The cubic root of 51446345 is about 371.9216917104.

The spelling of 51446345 in words is "fifty-one million, four hundred forty-six thousand, three hundred forty-five".