542201557 has 2 divisors, whose sum is σ = 542201558. Its totient is φ = 542201556.

The previous prime is 542201551. The next prime is 542201573. The reversal of 542201557 is 755102245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 286489476 + 255712081 = 16926^2 + 15991^2 .

It is a cyclic number.

It is not a de Polignac number, because 542201557 - 2¹¹ = 542199509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542201551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271100778 + 271100779.

It is an arithmetic number, because the mean of its divisors is an integer number (271100779).

Almost surely, 2^542201557 is an apocalyptic number.

It is an amenable number.

542201557 is a deficient number, since it is larger than the sum of its proper divisors (1).

542201557 is an equidigital number, since it uses as much as digits as its factorization.

542201557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 542201557 is about 23285.2218585093. The cubic root of 542201557 is about 815.4304409460.

The spelling of 542201557 in words is "five hundred forty-two million, two hundred one thousand, five hundred fifty-seven".