551810045 has 8 divisors (see below), whose sum is σ = 680068824. Its totient is φ = 429516864.

The previous prime is 551810041. The next prime is 551810081. The reversal of 551810045 is 540018155.

It can be written as a sum of positive squares in 4 ways, for example, as 100120036 + 451690009 = 10006^2 + 21253^2 .

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 551810045 - 2² = 551810041 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 (551810041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491194 + ... + 1491563.

It is an arithmetic number, because the mean of its divisors is an integer number (85008603).

Almost surely, 2^551810045 is an apocalyptic number.

It is an amenable number.

551810045 is a deficient number, since it is larger than the sum of its proper divisors (128258779).

551810045 is a wasteful number, since it uses less digits than its factorization.

551810045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982799.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 551810045 is about 23490.6373902455. The cubic root of 551810045 is about 820.2190793773.

The spelling of 551810045 in words is "five hundred fifty-one million, eight hundred ten thousand, forty-five".