1772081 has 4 divisors (see below), whose sum is σ = 1849152. Its totient is φ = 1695012.

The previous prime is 1772077. The next prime is 1772087. The reversal of 1772081 is 1802771.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1802771 = 353 ⋅5107.

It is a cyclic number.

It is not a de Polignac number, because 1772081 - 2² = 1772077 is a prime.

It is a super-2 number, since 2×1772081² = 6280542141122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1772081.

It is not an unprimeable number, because it can be changed into a prime (1772087) 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, 38501 + ... + 38546.

It is an arithmetic number, because the mean of its divisors is an integer number (462288).

2^1772081 is an apocalyptic number.

It is an amenable number.

1772081 is a deficient number, since it is larger than the sum of its proper divisors (77071).

1772081 is an equidigital number, since it uses as much as digits as its factorization.

1772081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77070.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 1772081 is about 1331.1953275158. The cubic root of 1772081 is about 121.0118377417.

The spelling of 1772081 in words is "one million, seven hundred seventy-two thousand, eighty-one".