45217147 has 4 divisors (see below), whose sum is σ = 45239040. Its totient is φ = 45195256.

The previous prime is 45217141. The next prime is 45217153. The reversal of 45217147 is 74171254.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (45217141) and next prime (45217153).

It is a cyclic number.

It is not a de Polignac number, because 45217147 - 2⁷ = 45217019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45217141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7483 + ... + 12100.

It is an arithmetic number, because the mean of its divisors is an integer number (11309760).

Almost surely, 2^45217147 is an apocalyptic number.

45217147 is a deficient number, since it is larger than the sum of its proper divisors (21893).

45217147 is a wasteful number, since it uses less digits than its factorization.

45217147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21892.

The product of its digits is 7840, while the sum is 31.

The square root of 45217147 is about 6724.3696358841. The cubic root of 45217147 is about 356.2605376179.

The spelling of 45217147 in words is "forty-five million, two hundred seventeen thousand, one hundred forty-seven".