551527111591 has 2 divisors, whose sum is σ = 551527111592. Its totient is φ = 551527111590.

The previous prime is 551527111579. The next prime is 551527111739. The reversal of 551527111591 is 195111725155.

It is a happy number.

551527111591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551527111591 - 2²⁹ = 550990240679 is a prime.

It is a super-2 number, since 2×551527111591² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551527111501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275763555795 + 275763555796.

It is an arithmetic number, because the mean of its divisors is an integer number (275763555796).

Almost surely, 2^551527111591 is an apocalyptic number.

551527111591 is a deficient number, since it is larger than the sum of its proper divisors (1).

551527111591 is an equidigital number, since it uses as much as digits as its factorization.

551527111591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78750, while the sum is 43.

The spelling of 551527111591 in words is "five hundred fifty-one billion, five hundred twenty-seven million, one hundred eleven thousand, five hundred ninety-one".