4157845 has 8 divisors (see below), whose sum is σ = 5023800. Its totient is φ = 3303360.

The previous prime is 4157837. The next prime is 4157863. The reversal of 4157845 is 5487514.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 4157521 = 18^2 + 2039^2 .

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

It is not a de Polignac number, because 4157845 - 2³ = 4157837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4157845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046 + ... + 3535.

It is an arithmetic number, because the mean of its divisors is an integer number (627975).

Almost surely, 2^4157845 is an apocalyptic number.

It is an amenable number.

4157845 is a deficient number, since it is larger than the sum of its proper divisors (865955).

4157845 is a wasteful number, since it uses less digits than its factorization.

4157845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its digits is 22400, while the sum is 34.

The square root of 4157845 is about 2039.0794491633. The cubic root of 4157845 is about 160.8012541877.

The spelling of 4157845 in words is "four million, one hundred fifty-seven thousand, eight hundred forty-five".