2905081 has 4 divisors (see below), whose sum is σ = 3058000. Its totient is φ = 2752164.

The previous prime is 2905073. The next prime is 2905087. The reversal of 2905081 is 1805092.

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 2905081 - 2³ = 2905073 is a prime.

It is a super-2 number, since 2×2905081² = 16878991233122, which contains 22 as substring.

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 (2905087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76431 + ... + 76468.

It is an arithmetic number, because the mean of its divisors is an integer number (764500).

2^2905081 is an apocalyptic number.

It is an amenable number.

2905081 is a deficient number, since it is larger than the sum of its proper divisors (152919).

2905081 is a wasteful number, since it uses less digits than its factorization.

2905081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152918.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2905081 is about 1704.4298166836. The cubic root of 2905081 is about 142.6875503197.

The spelling of 2905081 in words is "two million, nine hundred five thousand, eighty-one".