551690611 has 2 divisors, whose sum is σ = 551690612. Its totient is φ = 551690610.

The previous prime is 551690569. The next prime is 551690641. The reversal of 551690611 is 116096155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551690611 - 2¹⁹ = 551166323 is a prime.

It is not a weakly prime, because it can be changed into another prime (551690641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275845305 + 275845306.

It is an arithmetic number, because the mean of its divisors is an integer number (275845306).

Almost surely, 2^551690611 is an apocalyptic number.

551690611 is a deficient number, since it is larger than the sum of its proper divisors (1).

551690611 is an equidigital number, since it uses as much as digits as its factorization.

551690611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 551690611 is about 23488.0950909179. The cubic root of 551690611 is about 820.1598989190.

The spelling of 551690611 in words is "five hundred fifty-one million, six hundred ninety thousand, six hundred eleven".