542899657 has 2 divisors, whose sum is σ = 542899658. Its totient is φ = 542899656.

The previous prime is 542899603. The next prime is 542899717. The reversal of 542899657 is 756998245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519657616 + 23242041 = 22796^2 + 4821^2 .

It is a cyclic number.

It is not a de Polignac number, because 542899657 - 2²³ = 534511049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542899598 and 542899607.

It is not a weakly prime, because it can be changed into another prime (542899757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271449828 + 271449829.

It is an arithmetic number, because the mean of its divisors is an integer number (271449829).

Almost surely, 2^542899657 is an apocalyptic number.

It is an amenable number.

542899657 is a deficient number, since it is larger than the sum of its proper divisors (1).

542899657 is an equidigital number, since it uses as much as digits as its factorization.

542899657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 542899657 is about 23300.2072308381. The cubic root of 542899657 is about 815.7802541896.

The spelling of 542899657 in words is "five hundred forty-two million, eight hundred ninety-nine thousand, six hundred fifty-seven".