2045771 has 8 divisors (see below), whose sum is σ = 2517984. Its totient is φ = 1618560.

The previous prime is 2045761. The next prime is 2045773. The reversal of 2045771 is 1775402.

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 2045771 - 2¹⁴ = 2029387 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045771.

It is not an unprimeable number, because it can be changed into a prime (2045773) 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, 11150 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (314748).

2^2045771 is an apocalyptic number.

2045771 is a deficient number, since it is larger than the sum of its proper divisors (472213).

2045771 is a wasteful number, since it uses less digits than its factorization.

2045771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22501.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 2045771 is about 1430.3045130321. The cubic root of 2045771 is about 126.9459955976.

The spelling of 2045771 in words is "two million, forty-five thousand, seven hundred seventy-one".