45247209 has 8 divisors (see below), whose sum is σ = 68948160. Its totient is φ = 25855536.

The previous prime is 45247207. The next prime is 45247211. The reversal of 45247209 is 90274254.

It is an interprime number because it is at equal distance from previous prime (45247207) and next prime (45247211).

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

It is not a de Polignac number, because 45247209 - 2¹ = 45247207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45247209.

It is not an unprimeable number, because it can be changed into a prime (45247207) 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, 1077294 + ... + 1077335.

It is an arithmetic number, because the mean of its divisors is an integer number (8618520).

Almost surely, 2^45247209 is an apocalyptic number.

It is an amenable number.

45247209 is a deficient number, since it is larger than the sum of its proper divisors (23700951).

45247209 is a wasteful number, since it uses less digits than its factorization.

45247209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154639.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 45247209 is about 6726.6045669416. The cubic root of 45247209 is about 356.3394717718.

The spelling of 45247209 in words is "forty-five million, two hundred forty-seven thousand, two hundred nine".