545346331 has 2 divisors, whose sum is σ = 545346332. Its totient is φ = 545346330.

The previous prime is 545346323. The next prime is 545346359. The reversal of 545346331 is 133643545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545346331 - 2³ = 545346323 is a prime.

It is a super-2 number, since 2×545346331² = 594805241470323122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545346301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272673165 + 272673166.

It is an arithmetic number, because the mean of its divisors is an integer number (272673166).

Almost surely, 2^545346331 is an apocalyptic number.

545346331 is a deficient number, since it is larger than the sum of its proper divisors (1).

545346331 is an equidigital number, since it uses as much as digits as its factorization.

545346331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The square root of 545346331 is about 23352.6514768666. The cubic root of 545346331 is about 817.0039041655.

Adding to 545346331 its reverse (133643545), we get a palindrome (678989876).

The spelling of 545346331 in words is "five hundred forty-five million, three hundred forty-six thousand, three hundred thirty-one".