545113813 has 2 divisors, whose sum is σ = 545113814. Its totient is φ = 545113812.

The previous prime is 545113799. The next prime is 545113837. The reversal of 545113813 is 318311545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350176369 + 194937444 = 18713^2 + 13962^2 .

It is a cyclic number.

It is not a de Polignac number, because 545113813 - 2²⁵ = 511559381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545113843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272556906 + 272556907.

It is an arithmetic number, because the mean of its divisors is an integer number (272556907).

Almost surely, 2^545113813 is an apocalyptic number.

It is an amenable number.

545113813 is a deficient number, since it is larger than the sum of its proper divisors (1).

545113813 is an equidigital number, since it uses as much as digits as its factorization.

545113813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 545113813 is about 23347.6725392490. The cubic root of 545113813 is about 816.8877729977.

The spelling of 545113813 in words is "five hundred forty-five million, one hundred thirteen thousand, eight hundred thirteen".