54520133330251 has 4 divisors (see below), whose sum is σ = 54846601194672. Its totient is φ = 54193665465832.

The previous prime is 54520133330249. The next prime is 54520133330261. The reversal of 54520133330251 is 15203333102545.

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

It is a cyclic number.

It is not a de Polignac number, because 54520133330251 - 2¹ = 54520133330249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54520133330251.

It is not an unprimeable number, because it can be changed into a prime (54520133330261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163233931960 + ... + 163233932293.

It is an arithmetic number, because the mean of its divisors is an integer number (13711650298668).

Almost surely, 2^{54520133330251} is an apocalyptic number.

54520133330251 is a deficient number, since it is larger than the sum of its proper divisors (326467864421).

54520133330251 is a wasteful number, since it uses less digits than its factorization.

54520133330251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326467864420.

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 54520133330251 its reverse (15203333102545), we get a palindrome (69723466432796).

The spelling of 54520133330251 in words is "fifty-four trillion, five hundred twenty billion, one hundred thirty-three million, three hundred thirty thousand, two hundred fifty-one".