545440533541 has 2 divisors, whose sum is σ = 545440533542. Its totient is φ = 545440533540.

The previous prime is 545440533503. The next prime is 545440533559. The reversal of 545440533541 is 145335044545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375222402916 + 170218130625 = 612554^2 + 412575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545440533541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545440533041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272720266770 + 272720266771.

It is an arithmetic number, because the mean of its divisors is an integer number (272720266771).

Almost surely, 2^545440533541 is an apocalyptic number.

It is an amenable number.

545440533541 is a deficient number, since it is larger than the sum of its proper divisors (1).

545440533541 is an equidigital number, since it uses as much as digits as its factorization.

545440533541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440000, while the sum is 43.

The spelling of 545440533541 in words is "five hundred forty-five billion, four hundred forty million, five hundred thirty-three thousand, five hundred forty-one".