551065145 has 16 divisors (see below), whose sum is σ = 686112768. Its totient is φ = 424441920.

The previous prime is 551065129. The next prime is 551065147. The reversal of 551065145 is 541560155.

It is not a de Polignac number, because 551065145 - 2⁴ = 551065129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551065147) 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 15 ways as a sum of consecutive naturals, for example, 21512 + ... + 39558.

It is an arithmetic number, because the mean of its divisors is an integer number (42882048).

Almost surely, 2^551065145 is an apocalyptic number.

It is an amenable number.

551065145 is a deficient number, since it is larger than the sum of its proper divisors (135047623).

551065145 is a wasteful number, since it uses less digits than its factorization.

551065145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18280.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 551065145 is about 23474.7767827513. The cubic root of 551065145 is about 819.8498361751.

The spelling of 551065145 in words is "five hundred fifty-one million, sixty-five thousand, one hundred forty-five".