545220210131 has 4 divisors (see below), whose sum is σ = 549199919832. Its totient is φ = 541240500432.

The previous prime is 545220210107. The next prime is 545220210151. The reversal of 545220210131 is 131012022545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545220210131 is a prime.

It is a super-2 number, since 2×545220210131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545220210131.

It is not an unprimeable number, because it can be changed into a prime (545220210151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989854645 + ... + 1989854918.

It is an arithmetic number, because the mean of its divisors is an integer number (137299979958).

Almost surely, 2^545220210131 is an apocalyptic number.

545220210131 is a deficient number, since it is larger than the sum of its proper divisors (3979709701).

545220210131 is a wasteful number, since it uses less digits than its factorization.

545220210131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979709700.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 545220210131 its reverse (131012022545), we get a palindrome (676232232676).

The spelling of 545220210131 in words is "five hundred forty-five billion, two hundred twenty million, two hundred ten thousand, one hundred thirty-one".