545871819 has 8 divisors (see below), whose sum is σ = 770642640. Its totient is φ = 342507776.

The previous prime is 545871817. The next prime is 545871829. The reversal of 545871819 is 918178545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545871819 - 2¹ = 545871817 is a prime.

It is a super-2 number, since 2×545871819² = 595952085556737522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545871817) 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, 5351634 + ... + 5351735.

It is an arithmetic number, because the mean of its divisors is an integer number (96330330).

Almost surely, 2^545871819 is an apocalyptic number.

545871819 is a deficient number, since it is larger than the sum of its proper divisors (224770821).

545871819 is a wasteful number, since it uses less digits than its factorization.

545871819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10703389.

The product of its digits is 403200, while the sum is 48.

The square root of 545871819 is about 23363.8999099037. The cubic root of 545871819 is about 817.2662377198.

It can be divided in two parts, 5458 and 71819, that added together give a palindrome (77277).

The spelling of 545871819 in words is "five hundred forty-five million, eight hundred seventy-one thousand, eight hundred nineteen".