545220525501 has 12 divisors (see below), whose sum is σ = 798632883360. Its totient is φ = 358360908360.

The previous prime is 545220525491. The next prime is 545220525503. The reversal of 545220525501 is 105525022545.

545220525501 is a `hidden beast` number, since 5 + 4 + 52 + 2 + 0 + 52 + 550 + 1 = 666.

It is not a de Polignac number, because 545220525501 - 2⁵ = 545220525469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545220525503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426619491 + ... + 426620768.

It is an arithmetic number, because the mean of its divisors is an integer number (66552740280).

Almost surely, 2^545220525501 is an apocalyptic number.

It is an amenable number.

545220525501 is a deficient number, since it is larger than the sum of its proper divisors (253412357859).

545220525501 is a wasteful number, since it uses less digits than its factorization.

545220525501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853240336 (or 853240333 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 545220525501 in words is "five hundred forty-five billion, two hundred twenty million, five hundred twenty-five thousand, five hundred one".