6201581 has 8 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 5685120.

The previous prime is 6201571. The next prime is 6201599. The reversal of 6201581 is 1851026.

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 6201581 - 2¹⁴ = 6185197 is a prime.

It is a super-2 number, since 2×6201581² = 76919213799122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201521) 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 7 ways as a sum of consecutive naturals, for example, 4676 + ... + 5853.

It is an arithmetic number, because the mean of its divisors is an integer number (842400).

Almost surely, 2^6201581 is an apocalyptic number.

It is an amenable number.

6201581 is a deficient number, since it is larger than the sum of its proper divisors (537619).

6201581 is a wasteful number, since it uses less digits than its factorization.

6201581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10579.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 6201581 is about 2490.2973718012. The cubic root of 6201581 is about 183.7246689440.

The spelling of 6201581 in words is "six million, two hundred one thousand, five hundred eighty-one".