545700021 has 4 divisors (see below), whose sum is σ = 727600032. Its totient is φ = 363800012.

The previous prime is 545700011. The next prime is 545700041. The reversal of 545700021 is 120007545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545700021 - 2¹³ = 545691829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545699964 and 545700000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545700011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 90950001 + ... + 90950006.

It is an arithmetic number, because the mean of its divisors is an integer number (181900008).

Almost surely, 2^545700021 is an apocalyptic number.

It is an amenable number.

545700021 is a deficient number, since it is larger than the sum of its proper divisors (181900011).

545700021 is a wasteful number, since it uses less digits than its factorization.

545700021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181900010.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 545700021 is about 23360.2230511611. The cubic root of 545700021 is about 817.1804914376.

Adding to 545700021 its reverse (120007545), we get a palindrome (665707566).

It can be divided in two parts, 54 and 5700021, that added together give a palindrome (5700075).

The spelling of 545700021 in words is "five hundred forty-five million, seven hundred thousand, twenty-one".