551343545 has 4 divisors (see below), whose sum is σ = 661612260. Its totient is φ = 441074832.

The previous prime is 551343517. The next prime is 551343581. The reversal of 551343545 is 545343155.

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

It can be written as a sum of positive squares in 2 ways, for example, as 285914281 + 265429264 = 16909^2 + 16292^2 .

It is a cyclic number.

It is not a de Polignac number, because 551343545 - 2²² = 547149241 is a prime.

It is a super-2 number, since 2×551343545² = 607959409226334050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55134350 + ... + 55134359.

It is an arithmetic number, because the mean of its divisors is an integer number (165403065).

Almost surely, 2^551343545 is an apocalyptic number.

It is an amenable number.

551343545 is a deficient number, since it is larger than the sum of its proper divisors (110268715).

551343545 is a wasteful number, since it uses less digits than its factorization.

551343545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110268714.

The product of its digits is 90000, while the sum is 35.

The square root of 551343545 is about 23480.7058028501. The cubic root of 551343545 is about 819.9878765806.

The spelling of 551343545 in words is "five hundred fifty-one million, three hundred forty-three thousand, five hundred forty-five".