2044045551 has 4 divisors (see below), whose sum is σ = 2725394072. Its totient is φ = 1362697032.

The previous prime is 2044045547. The next prime is 2044045573. The reversal of 2044045551 is 1555404402.

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

It is not a de Polignac number, because 2044045551 - 2² = 2044045547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044045511) 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, 340674256 + ... + 340674261.

It is an arithmetic number, because the mean of its divisors is an integer number (681348518).

Almost surely, 2^2044045551 is an apocalyptic number.

2044045551 is a deficient number, since it is larger than the sum of its proper divisors (681348521).

2044045551 is an equidigital number, since it uses as much as digits as its factorization.

2044045551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681348520.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2044045551 is about 45211.1219834235. The cubic root of 2044045551 is about 1269.1029586208.

Adding to 2044045551 its reverse (1555404402), we get a palindrome (3599449953).

The spelling of 2044045551 in words is "two billion, forty-four million, forty-five thousand, five hundred fifty-one".