545166553501 has 4 divisors (see below), whose sum is σ = 545175779904. Its totient is φ = 545157327100.

The previous prime is 545166553493. The next prime is 545166553537. The reversal of 545166553501 is 105355661545.

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 545166553501 - 2³ = 545166553493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545166553541) 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, 4523995 + ... + 4642936.

It is an arithmetic number, because the mean of its divisors is an integer number (136293944976).

Almost surely, 2^545166553501 is an apocalyptic number.

It is an amenable number.

545166553501 is a deficient number, since it is larger than the sum of its proper divisors (9226403).

545166553501 is an equidigital number, since it uses as much as digits as its factorization.

545166553501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226402.

The product of its (nonzero) digits is 1350000, while the sum is 46.

The spelling of 545166553501 in words is "five hundred forty-five billion, one hundred sixty-six million, five hundred fifty-three thousand, five hundred one".