47145315 has 16 divisors (see below), whose sum is σ = 86208768. Its totient is φ = 21552096.

The previous prime is 47145311. The next prime is 47145317. The reversal of 47145315 is 51354174.

It is not a de Polignac number, because 47145315 - 2² = 47145311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47145311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224397 + ... + 224606.

It is an arithmetic number, because the mean of its divisors is an integer number (5388048).

Almost surely, 2^47145315 is an apocalyptic number.

47145315 is a deficient number, since it is larger than the sum of its proper divisors (39063453).

47145315 is a wasteful number, since it uses less digits than its factorization.

47145315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449018.

The product of its digits is 8400, while the sum is 30.

The square root of 47145315 is about 6866.2446067701. The cubic root of 47145315 is about 361.2541520019.

Adding to 47145315 its reverse (51354174), we get a palindrome (98499489).

The spelling of 47145315 in words is "forty-seven million, one hundred forty-five thousand, three hundred fifteen".