551855229 has 4 divisors (see below), whose sum is σ = 735806976. Its totient is φ = 367903484.

The previous prime is 551855221. The next prime is 551855231. The reversal of 551855229 is 922558155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 551855229 - 2³ = 551855221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551855221) 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, 91975869 + ... + 91975874.

It is an arithmetic number, because the mean of its divisors is an integer number (183951744).

Almost surely, 2^551855229 is an apocalyptic number.

It is an amenable number.

551855229 is a deficient number, since it is larger than the sum of its proper divisors (183951747).

551855229 is a wasteful number, since it uses less digits than its factorization.

551855229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183951746.

The product of its digits is 180000, while the sum is 42.

The square root of 551855229 is about 23491.5991154285. The cubic root of 551855229 is about 820.2414661676.

The spelling of 551855229 in words is "five hundred fifty-one million, eight hundred fifty-five thousand, two hundred twenty-nine".