4215745 has 8 divisors (see below), whose sum is σ = 5356584. Its totient is φ = 3174144.

The previous prime is 4215719. The next prime is 4215749. The reversal of 4215745 is 5475124.

It can be written as a sum of positive squares in 4 ways, for example, as 147456 + 4068289 = 384^2 + 2017^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4215745 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4215749) 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, 24714 + ... + 24883.

It is an arithmetic number, because the mean of its divisors is an integer number (669573).

Almost surely, 2^4215745 is an apocalyptic number.

It is an amenable number.

4215745 is a deficient number, since it is larger than the sum of its proper divisors (1140839).

4215745 is a wasteful number, since it uses less digits than its factorization.

4215745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49619.

The product of its digits is 5600, while the sum is 28.

The square root of 4215745 is about 2053.2279464297. The cubic root of 4215745 is about 161.5442277435.

The spelling of 4215745 in words is "four million, two hundred fifteen thousand, seven hundred forty-five".