4445157 has 4 divisors (see below), whose sum is σ = 5926880. Its totient is φ = 2963436.

The previous prime is 4445153. The next prime is 4445159. The reversal of 4445157 is 7515444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4445157 - 2² = 4445153 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

4445157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740857 + ... + 740862.

It is an arithmetic number, because the mean of its divisors is an integer number (1481720).

Almost surely, 2^4445157 is an apocalyptic number.

It is an amenable number.

4445157 is a deficient number, since it is larger than the sum of its proper divisors (1481723).

4445157 is a wasteful number, since it uses less digits than its factorization.

4445157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481722.

The product of its digits is 11200, while the sum is 30.

The square root of 4445157 is about 2108.3540973945. The cubic root of 4445157 is about 164.4229243847.

The spelling of 4445157 in words is "four million, four hundred forty-five thousand, one hundred fifty-seven".