2861156 has 6 divisors (see below), whose sum is σ = 5007030. Its totient is φ = 1430576.

The previous prime is 2861147. The next prime is 2861161. The reversal of 2861156 is 6511682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1779556 + 1081600 = 1334^2 + 1040^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357641 + ... + 357648.

It is an arithmetic number, because the mean of its divisors is an integer number (834505).

2^2861156 is an apocalyptic number.

It is an amenable number.

2861156 is a deficient number, since it is larger than the sum of its proper divisors (2145874).

2861156 is a wasteful number, since it uses less digits than its factorization.

2861156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715293 (or 715291 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2861156 is about 1691.4951965643. The cubic root of 2861156 is about 141.9647469189.

The spelling of 2861156 in words is "two million, eight hundred sixty-one thousand, one hundred fifty-six".