551342111 has 2 divisors, whose sum is σ = 551342112. Its totient is φ = 551342110.

The previous prime is 551342107. The next prime is 551342119. The reversal of 551342111 is 111243155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551342111 - 2² = 551342107 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551342119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275671055 + 275671056.

It is an arithmetic number, because the mean of its divisors is an integer number (275671056).

Almost surely, 2^551342111 is an apocalyptic number.

551342111 is a deficient number, since it is larger than the sum of its proper divisors (1).

551342111 is an equidigital number, since it uses as much as digits as its factorization.

551342111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 23.

The square root of 551342111 is about 23480.6752671213. The cubic root of 551342111 is about 819.9871656726.

Adding to 551342111 its reverse (111243155), we get a palindrome (662585266).

The spelling of 551342111 in words is "five hundred fifty-one million, three hundred forty-two thousand, one hundred eleven".