2961555 has 16 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 1569248.

The previous prime is 2961533. The next prime is 2961557. The reversal of 2961555 is 5551692.

It is a cyclic number.

It is not a de Polignac number, because 2961555 - 2¹¹ = 2959507 is a prime.

2961555 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2961557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (298080).

2^2961555 is an apocalyptic number.

2961555 is a deficient number, since it is larger than the sum of its proper divisors (1807725).

2961555 is a wasteful number, since it uses less digits than its factorization.

2961555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290.

The product of its digits is 13500, while the sum is 33.

The square root of 2961555 is about 1720.9169067680. The cubic root of 2961555 is about 143.6062254991.

The spelling of 2961555 in words is "two million, nine hundred sixty-one thousand, five hundred fifty-five".