545691829 has 2 divisors, whose sum is σ = 545691830. Its totient is φ = 545691828.

The previous prime is 545691827. The next prime is 545691851. The reversal of 545691829 is 928196545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498494929 + 47196900 = 22327^2 + 6870^2 .

It is a cyclic number.

It is not a de Polignac number, because 545691829 - 2¹ = 545691827 is a prime.

Together with 545691827, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545691827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272845914 + 272845915.

It is an arithmetic number, because the mean of its divisors is an integer number (272845915).

Almost surely, 2^545691829 is an apocalyptic number.

It is an amenable number.

545691829 is a deficient number, since it is larger than the sum of its proper divisors (1).

545691829 is an equidigital number, since it uses as much as digits as its factorization.

545691829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 49.

The square root of 545691829 is about 23360.0477097116. The cubic root of 545691829 is about 817.1764022702.

The spelling of 545691829 in words is "five hundred forty-five million, six hundred ninety-one thousand, eight hundred twenty-nine".