6201591 has 8 divisors (see below), whose sum is σ = 9020544. Its totient is φ = 3758520.

The previous prime is 6201571. The next prime is 6201599. The reversal of 6201591 is 1951026.

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

It is not a de Polignac number, because 6201591 - 2¹⁰ = 6200567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201599) 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, 93931 + ... + 93996.

It is an arithmetic number, because the mean of its divisors is an integer number (1127568).

Almost surely, 2^6201591 is an apocalyptic number.

6201591 is a deficient number, since it is larger than the sum of its proper divisors (2818953).

6201591 is a wasteful number, since it uses less digits than its factorization.

6201591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187941.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 6201591 is about 2490.2993795927. The cubic root of 6201591 is about 183.7247676955.

It can be divided in two parts, 620 and 1591, that added together give a triangular number (2211 = T₆₆).

The spelling of 6201591 in words is "six million, two hundred one thousand, five hundred ninety-one".