551051011 has 12 divisors (see below), whose sum is σ = 663124320. Its totient is φ = 456041040.

The previous prime is 551050993. The next prime is 551051023. The reversal of 551051011 is 110150155.

It is a happy number.

It is not a de Polignac number, because 551051011 - 2⁷ = 551050883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551051011.

It is not an unprimeable number, because it can be changed into a prime (551051041) 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 11 ways as a sum of consecutive naturals, for example, 192475 + ... + 195316.

It is an arithmetic number, because the mean of its divisors is an integer number (55260360).

Almost surely, 2^551051011 is an apocalyptic number.

551051011 is a deficient number, since it is larger than the sum of its proper divisors (112073309).

551051011 is a wasteful number, since it uses less digits than its factorization.

551051011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387834 (or 387827 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 551051011 is about 23474.4757342949. The cubic root of 551051011 is about 819.8428268062.

The spelling of 551051011 in words is "five hundred fifty-one million, fifty-one thousand, eleven".