545505401 has 16 divisors (see below), whose sum is σ = 660986496. Its totient is φ = 439485696.

The previous prime is 545505379. The next prime is 545505403. The reversal of 545505401 is 104505545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 545505401 - 2¹⁴ = 545489017 is a prime.

It is a super-2 number, since 2×545505401² = 595152285040341602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545505403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101750 + ... + 106976.

It is an arithmetic number, because the mean of its divisors is an integer number (41311656).

Almost surely, 2^545505401 is an apocalyptic number.

It is an amenable number.

545505401 is a deficient number, since it is larger than the sum of its proper divisors (115481095).

545505401 is a wasteful number, since it uses less digits than its factorization.

545505401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 545505401 is about 23356.0570516515. The cubic root of 545505401 is about 817.0833326985.

The spelling of 545505401 in words is "five hundred forty-five million, five hundred five thousand, four hundred one".