2661057 has 12 divisors (see below), whose sum is σ = 4392960. Its totient is φ = 1520568.

The previous prime is 2661013. The next prime is 2661067. The reversal of 2661057 is 7501662.

It is not a de Polignac number, because 2661057 - 2¹² = 2656961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2661057.

It is not an unprimeable number, because it can be changed into a prime (2661067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21057 + ... + 21182.

It is an arithmetic number, because the mean of its divisors is an integer number (366080).

2^2661057 is an apocalyptic number.

It is an amenable number.

2661057 is a deficient number, since it is larger than the sum of its proper divisors (1731903).

2661057 is a wasteful number, since it uses less digits than its factorization.

2661057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42252 (or 42249 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2661057 is about 1631.2746549861. The cubic root of 2661057 is about 138.5749484654.

The spelling of 2661057 in words is "two million, six hundred sixty-one thousand, fifty-seven".