6157891 has 2 divisors, whose sum is σ = 6157892. Its totient is φ = 6157890.

The previous prime is 6157883. The next prime is 6157897. The reversal of 6157891 is 1987516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6157891 - 2³ = 6157883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6157891.

It is not a weakly prime, because it can be changed into another prime (6157897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078945 + 3078946.

It is an arithmetic number, because the mean of its divisors is an integer number (3078946).

Almost surely, 2^6157891 is an apocalyptic number.

6157891 is a deficient number, since it is larger than the sum of its proper divisors (1).

6157891 is an equidigital number, since it uses as much as digits as its factorization.

6157891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 6157891 is about 2481.5098226684. The cubic root of 6157891 is about 183.2922063854.

The spelling of 6157891 in words is "six million, one hundred fifty-seven thousand, eight hundred ninety-one".