551105927 has 4 divisors (see below), whose sum is σ = 555128736. Its totient is φ = 547083120.

The previous prime is 551105869. The next prime is 551105939. The reversal of 551105927 is 729501155.

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

It is a cyclic number.

It is not a de Polignac number, because 551105927 - 2²⁸ = 282670471 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 (551105327) 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, 2011199 + ... + 2011472.

It is an arithmetic number, because the mean of its divisors is an integer number (138782184).

Almost surely, 2^551105927 is an apocalyptic number.

551105927 is a deficient number, since it is larger than the sum of its proper divisors (4022809).

551105927 is a wasteful number, since it uses less digits than its factorization.

551105927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022808.

The product of its (nonzero) digits is 15750, while the sum is 35.

The square root of 551105927 is about 23475.6454011386. The cubic root of 551105927 is about 819.8700602155.

The spelling of 551105927 in words is "five hundred fifty-one million, one hundred five thousand, nine hundred twenty-seven".