545412021101 has 4 divisors (see below), whose sum is σ = 545438322972. Its totient is φ = 545385719232.

The previous prime is 545412021079. The next prime is 545412021127. The reversal of 545412021101 is 101120214545.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 163826610025 + 381585411076 = 404755^2 + 617726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545412021101 is a prime.

It is a super-2 number, since 2×545412021101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545412021181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13119806 + ... + 13161311.

It is an arithmetic number, because the mean of its divisors is an integer number (136359580743).

Almost surely, 2^545412021101 is an apocalyptic number.

It is an amenable number.

545412021101 is a deficient number, since it is larger than the sum of its proper divisors (26301871).

545412021101 is a wasteful number, since it uses less digits than its factorization.

545412021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26301870.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 545412021101 its reverse (101120214545), we get a palindrome (646532235646).

The spelling of 545412021101 in words is "five hundred forty-five billion, four hundred twelve million, twenty-one thousand, one hundred one".