542550361 has 4 divisors (see below), whose sum is σ = 543877300. Its totient is φ = 541223424.

The previous prime is 542550353. The next prime is 542550383. The reversal of 542550361 is 163055245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 216531225 + 326019136 = 14715^2 + 18056^2 .

It is a cyclic number.

It is not a de Polignac number, because 542550361 - 2³ = 542550353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542550311) 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 in 3 ways as a sum of consecutive naturals, for example, 662856 + ... + 663673.

It is an arithmetic number, because the mean of its divisors is an integer number (135969325).

Almost surely, 2^542550361 is an apocalyptic number.

It is an amenable number.

542550361 is a deficient number, since it is larger than the sum of its proper divisors (1326939).

542550361 is a wasteful number, since it uses less digits than its factorization.

542550361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326938.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 542550361 is about 23292.7104691575. The cubic root of 542550361 is about 815.6052618076.

The spelling of 542550361 in words is "five hundred forty-two million, five hundred fifty thousand, three hundred sixty-one".