6157381 has 4 divisors (see below), whose sum is σ = 6273612. Its totient is φ = 6041152.

The previous prime is 6157369. The next prime is 6157397. The reversal of 6157381 is 1837516.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3006756 + 3150625 = 1734^2 + 1775^2 .

It is not a de Polignac number, because 6157381 - 2¹⁷ = 6026309 is a prime.

It is a super-2 number, since 2×6157381² = 75826681558322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6157351) 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 3 ways as a sum of consecutive naturals, for example, 58036 + ... + 58141.

It is an arithmetic number, because the mean of its divisors is an integer number (1568403).

Almost surely, 2^6157381 is an apocalyptic number.

It is an amenable number.

6157381 is a deficient number, since it is larger than the sum of its proper divisors (116231).

6157381 is a wasteful number, since it uses less digits than its factorization.

6157381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116230.

The product of its digits is 5040, while the sum is 31.

The square root of 6157381 is about 2481.4070605203. The cubic root of 6157381 is about 183.2871461244.

The spelling of 6157381 in words is "six million, one hundred fifty-seven thousand, three hundred eighty-one".