2957081 has 4 divisors (see below), whose sum is σ = 2965812. Its totient is φ = 2948352.

The previous prime is 2957057. The next prime is 2957107. The reversal of 2957081 is 1807592.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 781456 + 2175625 = 884^2 + 1475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2957081 is a prime.

It is a super-2 number, since 2×2957081² = 17488656081122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2957051) 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, 3836 + ... + 4541.

It is an arithmetic number, because the mean of its divisors is an integer number (741453).

2^2957081 is an apocalyptic number.

It is an amenable number.

2957081 is a deficient number, since it is larger than the sum of its proper divisors (8731).

2957081 is an equidigital number, since it uses as much as digits as its factorization.

2957081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2957081 is about 1719.6165270199. The cubic root of 2957081 is about 143.5338740866.

The spelling of 2957081 in words is "two million, nine hundred fifty-seven thousand, eighty-one".