545835780 has 192 divisors, whose sum is σ = 1953262080. Its totient is φ = 123959808.

The previous prime is 545835757. The next prime is 545835827. The reversal of 545835780 is 87538545.

545835780 is a `hidden beast` number, since 545 + 8 + 35 + 78 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 744294 + ... + 745026.

It is an arithmetic number, because the mean of its divisors is an integer number (10173240).

Almost surely, 2^545835780 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 545835780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976631040).

545835780 is an abundant number, since it is smaller than the sum of its proper divisors (1407426300).

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

545835780 is a wasteful number, since it uses less digits than its factorization.

545835780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The square root of 545835780 is about 23363.1286432276. The cubic root of 545835780 is about 817.2482517476.

The spelling of 545835780 in words is "five hundred forty-five million, eight hundred thirty-five thousand, seven hundred eighty".