551230187 has 2 divisors, whose sum is σ = 551230188. Its totient is φ = 551230186.

The previous prime is 551230177. The next prime is 551230237. The reversal of 551230187 is 781032155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551230187 - 2⁴ = 551230171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (551230177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275615093 + 275615094.

It is an arithmetic number, because the mean of its divisors is an integer number (275615094).

Almost surely, 2^551230187 is an apocalyptic number.

551230187 is a deficient number, since it is larger than the sum of its proper divisors (1).

551230187 is an equidigital number, since it uses as much as digits as its factorization.

551230187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 551230187 is about 23478.2918245770. The cubic root of 551230187 is about 819.9316753502.

The spelling of 551230187 in words is "five hundred fifty-one million, two hundred thirty thousand, one hundred eighty-seven".