2845551 has 4 divisors (see below), whose sum is σ = 3794072. Its totient is φ = 1897032.

The previous prime is 2845547. The next prime is 2845553. The reversal of 2845551 is 1555482.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2845551 - 2² = 2845547 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2845553) 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, 474256 + ... + 474261.

It is an arithmetic number, because the mean of its divisors is an integer number (948518).

2^2845551 is an apocalyptic number.

2845551 is a deficient number, since it is larger than the sum of its proper divisors (948521).

2845551 is an equidigital number, since it uses as much as digits as its factorization.

2845551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948520.

The product of its digits is 8000, while the sum is 30.

The square root of 2845551 is about 1686.8761068911. The cubic root of 2845551 is about 141.7061801352.

The spelling of 2845551 in words is "two million, eight hundred forty-five thousand, five hundred fifty-one".