542173026553 has 4 divisors (see below), whose sum is σ = 549600054388. Its totient is φ = 534745998720.

The previous prime is 542173026547. The next prime is 542173026589. The reversal of 542173026553 is 355620371245.

It is a happy number.

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 304695168064 + 237477858489 = 551992^2 + 487317^2 .

It is a cyclic number.

It is not a de Polignac number, because 542173026553 - 2⁹ = 542173026041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542173026253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3713513808 + ... + 3713513953.

It is an arithmetic number, because the mean of its divisors is an integer number (137400013597).

Almost surely, 2^542173026553 is an apocalyptic number.

It is an amenable number.

542173026553 is a deficient number, since it is larger than the sum of its proper divisors (7427027835).

542173026553 is an equidigital number, since it uses as much as digits as its factorization.

542173026553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7427027834.

The product of its (nonzero) digits is 756000, while the sum is 43.

Adding to 542173026553 its reverse (355620371245), we get a palindrome (897793397798).

The spelling of 542173026553 in words is "five hundred forty-two billion, one hundred seventy-three million, twenty-six thousand, five hundred fifty-three".