2161562 has 8 divisors (see below), whose sum is σ = 3491796. Its totient is φ = 997632.

The previous prime is 2161553. The next prime is 2161571. The reversal of 2161562 is 2651612.

It is an interprime number because it is at equal distance from previous prime (2161553) and next prime (2161571).

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 546121 = 1271^2 + 739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41543 + ... + 41594.

2^2161562 is an apocalyptic number.

2161562 is a deficient number, since it is larger than the sum of its proper divisors (1330234).

2161562 is a wasteful number, since it uses less digits than its factorization.

2161562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83152.

The product of its digits is 720, while the sum is 23.

The square root of 2161562 is about 1470.2251528252. The cubic root of 2161562 is about 129.2972334031.

The spelling of 2161562 in words is "two million, one hundred sixty-one thousand, five hundred sixty-two".