45217427 has 4 divisors (see below), whose sum is σ = 46070640. Its totient is φ = 44364216.

The previous prime is 45217411. The next prime is 45217481. The reversal of 45217427 is 72471254.

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

It is a cyclic number.

It is not a de Polignac number, because 45217427 - 2⁴ = 45217411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45217393 and 45217402.

It is not an unprimeable number, because it can be changed into a prime (45210427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426527 + ... + 426632.

It is an arithmetic number, because the mean of its divisors is an integer number (11517660).

Almost surely, 2^45217427 is an apocalyptic number.

45217427 is a deficient number, since it is larger than the sum of its proper divisors (853213).

45217427 is an equidigital number, since it uses as much as digits as its factorization.

45217427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853212.

The product of its digits is 15680, while the sum is 32.

The square root of 45217427 is about 6724.3904556473. The cubic root of 45217427 is about 356.2612729787.

The spelling of 45217427 in words is "forty-five million, two hundred seventeen thousand, four hundred twenty-seven".