545241401521 has 4 divisors (see below), whose sum is σ = 545659853632. Its totient is φ = 544822949412.

The previous prime is 545241401479. The next prime is 545241401567. The reversal of 545241401521 is 125104142545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545241401521 - 2¹¹ = 545241399473 is a prime.

It is a super-2 number, since 2×545241401521² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545241401921) 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, 209224101 + ... + 209226706.

It is an arithmetic number, because the mean of its divisors is an integer number (136414963408).

Almost surely, 2^545241401521 is an apocalyptic number.

It is an amenable number.

545241401521 is a deficient number, since it is larger than the sum of its proper divisors (418452111).

545241401521 is a wasteful number, since it uses less digits than its factorization.

545241401521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418452110.

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 545241401521 in words is "five hundred forty-five billion, two hundred forty-one million, four hundred one thousand, five hundred twenty-one".