6157861 has 2 divisors, whose sum is σ = 6157862. Its totient is φ = 6157860.

The previous prime is 6157847. The next prime is 6157883. The reversal of 6157861 is 1687516.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6155361 + 2500 = 2481^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 6157861 - 2¹³ = 6149669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6157841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078930 + 3078931.

It is an arithmetic number, because the mean of its divisors is an integer number (3078931).

Almost surely, 2^6157861 is an apocalyptic number.

It is an amenable number.

6157861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6157861 is an equidigital number, since it uses as much as digits as its factorization.

6157861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 6157861 is about 2481.5037779540. The cubic root of 6157861 is about 183.2919087307.

The spelling of 6157861 in words is "six million, one hundred fifty-seven thousand, eight hundred sixty-one".