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540386857 is a prime number
BaseRepresentation
bin100000001101011…
…010011000101001
31101122211111102001
4200031122120221
52101314334412
6125342211001
716251132613
oct4015323051
91348744361
10540386857
1125804170a
12130b83a61
1387c55a4a
1451aa9db3
1532694957
hex2035a629

540386857 has 2 divisors, whose sum is σ = 540386858. Its totient is φ = 540386856.

The previous prime is 540386843. The next prime is 540386867. The reversal of 540386857 is 758683045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333573696 + 206813161 = 18264^2 + 14381^2 .

It is a cyclic number.

It is not a de Polignac number, because 540386857 - 211 = 540384809 is a prime.

It is not a weakly prime, because it can be changed into another prime (540386827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270193428 + 270193429.

It is an arithmetic number, because the mean of its divisors is an integer number (270193429).

Almost surely, 2540386857 is an apocalyptic number.

It is an amenable number.

540386857 is a deficient number, since it is larger than the sum of its proper divisors (1).

540386857 is an equidigital number, since it uses as much as digits as its factorization.

540386857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 540386857 is about 23246.2224242994. Note that the first 3 decimals coincide. The cubic root of 540386857 is about 814.5196999402.

The spelling of 540386857 in words is "five hundred forty million, three hundred eighty-six thousand, eight hundred fifty-seven".