545799540 has 144 divisors (see below), whose sum is σ = 1809327744. Its totient is φ = 122115840.

The previous prime is 545799539. The next prime is 545799563. The reversal of 545799540 is 45997545.

It is a self number, because there is not a number n which added to its sum of digits gives 545799540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91489 + ... + 97271.

It is an arithmetic number, because the mean of its divisors is an integer number (12564776).

Almost surely, 2^545799540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545799540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904663872).

545799540 is an abundant number, since it is smaller than the sum of its proper divisors (1263528204).

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

545799540 is a wasteful number, since it uses less digits than its factorization.

545799540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5830 (or 5817 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 48.

The square root of 545799540 is about 23362.3530492971. The cubic root of 545799540 is about 817.2301646640.

The spelling of 545799540 in words is "five hundred forty-five million, seven hundred ninety-nine thousand, five hundred forty".