545815452 has 192 divisors, whose sum is σ = 1637443584. Its totient is φ = 137687040.

The previous prime is 545815381. The next prime is 545815463. The reversal of 545815452 is 254518545.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 545815452.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3268273 + ... + 3268439.

It is an arithmetic number, because the mean of its divisors is an integer number (8528352).

Almost surely, 2^545815452 is an apocalyptic number.

545815452 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545815452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818721792).

545815452 is an abundant number, since it is smaller than the sum of its proper divisors (1091628132).

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

545815452 is a wasteful number, since it uses less digits than its factorization.

545815452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 306 counting only the distinct ones).

The product of its digits is 160000, while the sum is 39.

The square root of 545815452 is about 23362.6935947035. The cubic root of 545815452 is about 817.2381063099.

It can be divided in two parts, 5458 and 15452, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 545815452 in words is "five hundred forty-five million, eight hundred fifteen thousand, four hundred fifty-two".