2979561 has 16 divisors (see below), whose sum is σ = 4504640. Its totient is φ = 1736640.

The previous prime is 2979551. The next prime is 2979563. The reversal of 2979561 is 1659792.

It is not a de Polignac number, because 2979561 - 2⁶ = 2979497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (2979563) 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, 1270 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (281540).

2^2979561 is an apocalyptic number.

It is an amenable number.

2979561 is a deficient number, since it is larger than the sum of its proper divisors (1525079).

2979561 is a wasteful number, since it uses less digits than its factorization.

2979561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its digits is 34020, while the sum is 39.

The square root of 2979561 is about 1726.1404925440. The cubic root of 2979561 is about 143.8966754934.

The spelling of 2979561 in words is "two million, nine hundred seventy-nine thousand, five hundred sixty-one".