47227509 has 16 divisors (see below), whose sum is σ = 79962240. Its totient is φ = 26987040.

The previous prime is 47227507. The next prime is 47227511. The reversal of 47227509 is 90572274.

It is an interprime number because it is at equal distance from previous prime (47227507) and next prime (47227511).

It is not a de Polignac number, because 47227509 - 2¹ = 47227507 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47227501) 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, 124752 + ... + 125129.

It is an arithmetic number, because the mean of its divisors is an integer number (4997640).

Almost surely, 2^47227509 is an apocalyptic number.

It is an amenable number.

47227509 is a deficient number, since it is larger than the sum of its proper divisors (32734731).

47227509 is a wasteful number, since it uses less digits than its factorization.

47227509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249897 (or 249891 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 47227509 is about 6872.2273681827. The cubic root of 47227509 is about 361.4639691366.

The spelling of 47227509 in words is "forty-seven million, two hundred twenty-seven thousand, five hundred nine".