545001931 has 2 divisors, whose sum is σ = 545001932. Its totient is φ = 545001930.

The previous prime is 545001887. The next prime is 545001937. The reversal of 545001931 is 139100545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545001931 is a prime.

It is a super-2 number, since 2×545001931² = 594054209587457522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 545001931.

It is not a weakly prime, because it can be changed into another prime (545001937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272500965 + 272500966.

It is an arithmetic number, because the mean of its divisors is an integer number (272500966).

Almost surely, 2^545001931 is an apocalyptic number.

545001931 is a deficient number, since it is larger than the sum of its proper divisors (1).

545001931 is an equidigital number, since it uses as much as digits as its factorization.

545001931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 545001931 is about 23345.2764172969. The cubic root of 545001931 is about 816.8318817390.

The spelling of 545001931 in words is "five hundred forty-five million, one thousand, nine hundred thirty-one".