551045361 has 16 divisors (see below), whose sum is σ = 778425984. Its totient is φ = 345540864.

The previous prime is 551045323. The next prime is 551045401. The reversal of 551045361 is 163540155.

It is not a de Polignac number, because 551045361 - 2⁹ = 551044849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (551045311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140716 + ... + 144578.

It is an arithmetic number, because the mean of its divisors is an integer number (48651624).

Almost surely, 2^551045361 is an apocalyptic number.

551045361 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

551045361 is a deficient number, since it is larger than the sum of its proper divisors (227380623).

551045361 is a wasteful number, since it uses less digits than its factorization.

551045361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 551045361 is about 23474.3553905107. The cubic root of 551045361 is about 819.8400248104.

The spelling of 551045361 in words is "five hundred fifty-one million, forty-five thousand, three hundred sixty-one".