55532111 has 2 divisors, whose sum is σ = 55532112. Its totient is φ = 55532110.

The previous prime is 55532107. The next prime is 55532119. The reversal of 55532111 is 11123555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55532111 - 2² = 55532107 is a prime.

It is a Sophie Germain prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55532119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27766055 + 27766056.

It is an arithmetic number, because the mean of its divisors is an integer number (27766056).

Almost surely, 2^55532111 is an apocalyptic number.

55532111 is a deficient number, since it is larger than the sum of its proper divisors (1).

55532111 is an equidigital number, since it uses as much as digits as its factorization.

55532111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 750, while the sum is 23.

The square root of 55532111 is about 7451.9870504450. The cubic root of 55532111 is about 381.5177319991.

Adding to 55532111 its reverse (11123555), we get a palindrome (66655666).

The spelling of 55532111 in words is "fifty-five million, five hundred thirty-two thousand, one hundred eleven".