545131 has 2 divisors, whose sum is σ = 545132. Its totient is φ = 545130.

The previous prime is 545117. The next prime is 545141. The reversal of 545131 is 131545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545131 is a prime.

It is a super-2 number, since 2×545131² = 594335614322, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 545099 and 545108.

It is not a weakly prime, because it can be changed into another prime (545141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272565 + 272566.

It is an arithmetic number, because the mean of its divisors is an integer number (272566).

2⁵⁴⁵¹³¹ is an apocalyptic number.

545131 is a deficient number, since it is larger than the sum of its proper divisors (1).

545131 is an equidigital number, since it uses as much as digits as its factorization.

545131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 19.

The square root of 545131 is about 738.3298720762. The cubic root of 545131 is about 81.6896358179.

Adding to 545131 its reverse (131545), we get a palindrome (676676).

It can be divided in two parts, 545 and 131, that added together give a palindrome (676).

The spelling of 545131 in words is "five hundred forty-five thousand, one hundred thirty-one".