3045781 has 4 divisors (see below), whose sum is σ = 3144064. Its totient is φ = 2947500.

The previous prime is 3045773. The next prime is 3045793. The reversal of 3045781 is 1875403.

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.

It is a cyclic number.

It is not a de Polignac number, because 3045781 - 2³ = 3045773 is a prime.

It is a super-2 number, since 2×3045781² = 18553563799922, 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 (3045701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49095 + ... + 49156.

It is an arithmetic number, because the mean of its divisors is an integer number (786016).

Almost surely, 2^3045781 is an apocalyptic number.

3045781 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3045781 is a deficient number, since it is larger than the sum of its proper divisors (98283).

3045781 is an equidigital number, since it uses as much as digits as its factorization.

3045781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98282.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 3045781 is about 1745.2166054676. The cubic root of 3045781 is about 144.9548967923.

The spelling of 3045781 in words is "three million, forty-five thousand, seven hundred eighty-one".