545042780 has 24 divisors (see below), whose sum is σ = 1211919408. Its totient is φ = 205192448.

The previous prime is 545042761. The next prime is 545042783. The reversal of 545042780 is 87240545.

It is a self number, because there is not a number n which added to its sum of digits gives 545042780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545042783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801194 + ... + 801873.

It is an arithmetic number, because the mean of its divisors is an integer number (50496642).

Almost surely, 2^545042780 is an apocalyptic number.

It is an amenable number.

545042780 is an abundant number, since it is smaller than the sum of its proper divisors (666876628).

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

545042780 is a wasteful number, since it uses less digits than its factorization.

545042780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603093 (or 1603091 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 545042780 is about 23346.1512888099. The cubic root of 545042780 is about 816.8522889645.

The spelling of 545042780 in words is "five hundred forty-five million, forty-two thousand, seven hundred eighty".