551661107 has 2 divisors, whose sum is σ = 551661108. Its totient is φ = 551661106.

The previous prime is 551661059. The next prime is 551661119. The reversal of 551661107 is 701166155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551661107 - 2²⁴ = 534883891 is a prime.

It is a Chen prime.

It is equal to p_28928021 and since 551661107 and 28928021 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (551661127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275830553 + 275830554.

It is an arithmetic number, because the mean of its divisors is an integer number (275830554).

Almost surely, 2^551661107 is an apocalyptic number.

551661107 is a deficient number, since it is larger than the sum of its proper divisors (1).

551661107 is an equidigital number, since it uses as much as digits as its factorization.

551661107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 551661107 is about 23487.4670196682. The cubic root of 551661107 is about 820.1452781463.

The spelling of 551661107 in words is "five hundred fifty-one million, six hundred sixty-one thousand, one hundred seven".