540777641 has 2 divisors, whose sum is σ = 540777642. Its totient is φ = 540777640.

The previous prime is 540777623. The next prime is 540777647. The reversal of 540777641 is 146777045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383024041 + 157753600 = 19571^2 + 12560^2 .

It is a cyclic number.

It is not a de Polignac number, because 540777641 - 2²² = 536583337 is a prime.

It is a Chen prime.

It is equal to p_28387094 and since 540777641 and 28387094 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (540777647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270388820 + 270388821.

It is an arithmetic number, because the mean of its divisors is an integer number (270388821).

Almost surely, 2^540777641 is an apocalyptic number.

It is an amenable number.

540777641 is a deficient number, since it is larger than the sum of its proper divisors (1).

540777641 is an equidigital number, since it uses as much as digits as its factorization.

540777641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 540777641 is about 23254.6262279143. The cubic root of 540777641 is about 814.7159942344.

The spelling of 540777641 in words is "five hundred forty million, seven hundred seventy-seven thousand, six hundred forty-one".