2059781 has 8 divisors (see below), whose sum is σ = 2124864. Its totient is φ = 1995840.

The previous prime is 2059777. The next prime is 2059793. The reversal of 2059781 is 1879502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2059781 - 2² = 2059777 is a prime.

It is a super-2 number, since 2×2059781² = 8485395535922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2059711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4541 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (265608).

2^2059781 is an apocalyptic number.

It is an amenable number.

2059781 is a deficient number, since it is larger than the sum of its proper divisors (65083).

2059781 is an equidigital number, since it uses as much as digits as its factorization.

2059781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

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

The square root of 2059781 is about 1435.1937151479. The cubic root of 2059781 is about 127.2351235692.

The spelling of 2059781 in words is "two million, fifty-nine thousand, seven hundred eighty-one".