4153581 has 12 divisors (see below), whose sum is σ = 6027840. Its totient is φ = 2756040.

The previous prime is 4153579. The next prime is 4153607. The reversal of 4153581 is 1853514.

It is not a de Polignac number, because 4153581 - 2¹ = 4153579 is a prime.

It is a super-2 number, since 2×4153581² = 34504470247122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4153561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1186 + ... + 3116.

It is an arithmetic number, because the mean of its divisors is an integer number (502320).

Almost surely, 2^4153581 is an apocalyptic number.

It is an amenable number.

4153581 is a deficient number, since it is larger than the sum of its proper divisors (1874259).

4153581 is a wasteful number, since it uses less digits than its factorization.

4153581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2173 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 4153581 is about 2038.0336111065. The cubic root of 4153581 is about 160.7462664822.

It can be divided in two parts, 41535 and 81, that added together give a triangular number (41616 = T₂₈₈).

The spelling of 4153581 in words is "four million, one hundred fifty-three thousand, five hundred eighty-one".