545931 has 6 divisors (see below), whose sum is σ = 788580. Its totient is φ = 363948.

The previous prime is 545929. The next prime is 545933. The reversal of 545931 is 139545.

It is an interprime number because it is at equal distance from previous prime (545929) and next prime (545933).

It is not a de Polignac number, because 545931 - 2¹ = 545929 is a prime.

It is a super-2 number, since 2×545931² = 596081313522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 545895 and 545904.

It is not an unprimeable number, because it can be changed into a prime (545933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30321 + ... + 30338.

It is an arithmetic number, because the mean of its divisors is an integer number (131430).

2⁵⁴⁵⁹³¹ is an apocalyptic number.

545931 is a deficient number, since it is larger than the sum of its proper divisors (242649).

545931 is a wasteful number, since it uses less digits than its factorization.

545931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60665 (or 60662 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 545931 is about 738.8714367195. The cubic root of 545931 is about 81.7295771445.

The spelling of 545931 in words is "five hundred forty-five thousand, nine hundred thirty-one".