545010989 has 2 divisors, whose sum is σ = 545010990. Its totient is φ = 545010988.

The previous prime is 545010943. The next prime is 545011043. The reversal of 545010989 is 989010545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418898089 + 126112900 = 20467^2 + 11230^2 .

It is a cyclic number.

It is not a de Polignac number, because 545010989 - 2⁸ = 545010733 is a prime.

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

545010989 is a modest number, since divided by 10989 gives 545 as remainder.

It is equal to p_28597217 and since 545010989 and 28597217 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545010929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272505494 + 272505495.

It is an arithmetic number, because the mean of its divisors is an integer number (272505495).

Almost surely, 2^545010989 is an apocalyptic number.

It is an amenable number.

545010989 is a deficient number, since it is larger than the sum of its proper divisors (1).

545010989 is an equidigital number, since it uses as much as digits as its factorization.

545010989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 545010989 is about 23345.4704171923. The cubic root of 545010989 is about 816.8364069965.

The spelling of 545010989 in words is "five hundred forty-five million, ten thousand, nine hundred eighty-nine".