2919561 has 4 divisors (see below), whose sum is σ = 3892752. Its totient is φ = 1946372.

The previous prime is 2919557. The next prime is 2919577. The reversal of 2919561 is 1659192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2919561 - 2² = 2919557 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2919541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486591 + ... + 486596.

It is an arithmetic number, because the mean of its divisors is an integer number (973188).

2^2919561 is an apocalyptic number.

It is an amenable number.

2919561 is a deficient number, since it is larger than the sum of its proper divisors (973191).

2919561 is an equidigital number, since it uses as much as digits as its factorization.

2919561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973190.

The product of its digits is 4860, while the sum is 33.

The square root of 2919561 is about 1708.6722915761. The cubic root of 2919561 is about 142.9242267314.

The spelling of 2919561 in words is "two million, nine hundred nineteen thousand, five hundred sixty-one".