6135391 has 4 divisors (see below), whose sum is σ = 6227032. Its totient is φ = 6043752.

The previous prime is 6135383. The next prime is 6135397. The reversal of 6135391 is 1935316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6135391 - 2³ = 6135383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6135397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45720 + ... + 45853.

It is an arithmetic number, because the mean of its divisors is an integer number (1556758).

Almost surely, 2^6135391 is an apocalyptic number.

6135391 is a deficient number, since it is larger than the sum of its proper divisors (91641).

6135391 is an equidigital number, since it uses as much as digits as its factorization.

6135391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91640.

The product of its digits is 2430, while the sum is 28.

The square root of 6135391 is about 2476.9721435656. The cubic root of 6135391 is about 183.0686932930.

The spelling of 6135391 in words is "six million, one hundred thirty-five thousand, three hundred ninety-one".