545511331 has 2 divisors, whose sum is σ = 545511332. Its totient is φ = 545511330.

The previous prime is 545511301. The next prime is 545511361. The reversal of 545511331 is 133115545.

It is a balanced prime because it is at equal distance from previous prime (545511301) and next prime (545511361).

It is a cyclic number.

It is not a de Polignac number, because 545511331 - 2²⁹ = 8640419 is a prime.

It is a super-2 number, since 2×545511331² = 595165224498783122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545511331.

It is not a weakly prime, because it can be changed into another prime (545511301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272755665 + 272755666.

It is an arithmetic number, because the mean of its divisors is an integer number (272755666).

Almost surely, 2^545511331 is an apocalyptic number.

545511331 is a deficient number, since it is larger than the sum of its proper divisors (1).

545511331 is an equidigital number, since it uses as much as digits as its factorization.

545511331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 28.

The square root of 545511331 is about 23356.1839991040. The cubic root of 545511331 is about 817.0862934310.

Adding to 545511331 its reverse (133115545), we get a palindrome (678626876).

The spelling of 545511331 in words is "five hundred forty-five million, five hundred eleven thousand, three hundred thirty-one".