545034521 has 2 divisors, whose sum is σ = 545034522. Its totient is φ = 545034520.

The previous prime is 545034463. The next prime is 545034527. The reversal of 545034521 is 125430545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367105600 + 177928921 = 19160^2 + 13339^2 .

It is a cyclic number.

It is not a de Polignac number, because 545034521 - 2²² = 540840217 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (545034527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272517260 + 272517261.

It is an arithmetic number, because the mean of its divisors is an integer number (272517261).

Almost surely, 2^545034521 is an apocalyptic number.

It is an amenable number.

545034521 is a deficient number, since it is larger than the sum of its proper divisors (1).

545034521 is an equidigital number, since it uses as much as digits as its factorization.

545034521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 545034521 is about 23345.9744067366. The cubic root of 545034521 is about 816.8481630394.

The spelling of 545034521 in words is "five hundred forty-five million, thirty-four thousand, five hundred twenty-one".