4155591 has 8 divisors (see below), whose sum is σ = 6044544. Its totient is φ = 2518520.

The previous prime is 4155589. The next prime is 4155607. The reversal of 4155591 is 1955514.

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

It is a cyclic number.

It is not a de Polignac number, because 4155591 - 2¹ = 4155589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155511) 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, 62931 + ... + 62996.

It is an arithmetic number, because the mean of its divisors is an integer number (755568).

Almost surely, 2^4155591 is an apocalyptic number.

4155591 is a deficient number, since it is larger than the sum of its proper divisors (1888953).

4155591 is a wasteful number, since it uses less digits than its factorization.

4155591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125941.

The product of its digits is 4500, while the sum is 30.

The square root of 4155591 is about 2038.5266738505. The cubic root of 4155591 is about 160.7721917334.

It can be divided in two parts, 415 and 5591, that added together give a palindrome (6006).

The spelling of 4155591 in words is "four million, one hundred fifty-five thousand, five hundred ninety-one".