545501730 has 128 divisors (see below), whose sum is σ = 1412038656. Its totient is φ = 134611200.

The previous prime is 545501653. The next prime is 545501731. The reversal of 545501730 is 37105545.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (545501731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2855935 + ... + 2856125.

It is an arithmetic number, because the mean of its divisors is an integer number (11031552).

Almost surely, 2^545501730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545501730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706019328).

545501730 is an abundant number, since it is smaller than the sum of its proper divisors (866536926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545501730 is a wasteful number, since it uses less digits than its factorization.

545501730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 545501730 is about 23355.9784637681. The cubic root of 545501730 is about 817.0814998296.

It can be divided in two parts, 54550 and 1730, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 545501730 in words is "five hundred forty-five million, five hundred one thousand, seven hundred thirty".