47815345 has 8 divisors (see below), whose sum is σ = 59357160. Its totient is φ = 36933120.

The previous prime is 47815337. The next prime is 47815349. The reversal of 47815345 is 54351874.

It can be written as a sum of positive squares in 4 ways, for example, as 39601 + 47775744 = 199^2 + 6912^2 .

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

It is not a de Polignac number, because 47815345 - 2³ = 47815337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47815349) 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, 164736 + ... + 165025.

It is an arithmetic number, because the mean of its divisors is an integer number (7419645).

Almost surely, 2^47815345 is an apocalyptic number.

It is an amenable number.

47815345 is a deficient number, since it is larger than the sum of its proper divisors (11541815).

47815345 is a wasteful number, since it uses less digits than its factorization.

47815345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329795.

The product of its digits is 67200, while the sum is 37.

The square root of 47815345 is about 6914.8640622936. The cubic root of 47815345 is about 362.9574913479.

The spelling of 47815345 in words is "forty-seven million, eight hundred fifteen thousand, three hundred forty-five".