501543261055 has 4 divisors (see below), whose sum is σ = 601851913272. Its totient is φ = 401234608840.

The previous prime is 501543261031. The next prime is 501543261097. The reversal of 501543261055 is 550162345105.

It is a happy number.

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

It is not a de Polignac number, because 501543261055 - 2¹³ = 501543252863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50154326101 + ... + 50154326110.

It is an arithmetic number, because the mean of its divisors is an integer number (150462978318).

Almost surely, 2^501543261055 is an apocalyptic number.

501543261055 is a deficient number, since it is larger than the sum of its proper divisors (100308652217).

501543261055 is a wasteful number, since it uses less digits than its factorization.

501543261055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100308652216.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 501543261055 in words is "five hundred one billion, five hundred forty-three million, two hundred sixty-one thousand, fifty-five".