545651731 has 2 divisors, whose sum is σ = 545651732. Its totient is φ = 545651730.

The previous prime is 545651699. The next prime is 545651741. The reversal of 545651731 is 137156545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545651731 - 2⁵ = 545651699 is a prime.

It is a super-2 number, since 2×545651731² = 595471623086592722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545651741) 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, 272825865 + 272825866.

It is an arithmetic number, because the mean of its divisors is an integer number (272825866).

Almost surely, 2^545651731 is an apocalyptic number.

545651731 is a deficient number, since it is larger than the sum of its proper divisors (1).

545651731 is an equidigital number, since it uses as much as digits as its factorization.

545651731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 545651731 is about 23359.1894337111. The cubic root of 545651731 is about 817.1563861242.

The spelling of 545651731 in words is "five hundred forty-five million, six hundred fifty-one thousand, seven hundred thirty-one".