545125530 has 64 divisors (see below), whose sum is σ = 1368264960. Its totient is φ = 138733056.

The previous prime is 545125501. The next prime is 545125573. The reversal of 545125530 is 35521545.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 571534 + ... + 572486.

It is an arithmetic number, because the mean of its divisors is an integer number (21379140).

Almost surely, 2^545125530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545125530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684132480).

545125530 is an abundant number, since it is smaller than the sum of its proper divisors (823139430).

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

545125530 is a wasteful number, since it uses less digits than its factorization.

545125530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 545125530 is about 23347.9234622696. The cubic root of 545125530 is about 816.8936258460.

The spelling of 545125530 in words is "five hundred forty-five million, one hundred twenty-five thousand, five hundred thirty".