61503089 has 2 divisors, whose sum is σ = 61503090. Its totient is φ = 61503088.

The previous prime is 61503077. The next prime is 61503097. The reversal of 61503089 is 98030516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57259489 + 4243600 = 7567^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 61503089 - 2⁴ = 61503073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (61503989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30751544 + 30751545.

It is an arithmetic number, because the mean of its divisors is an integer number (30751545).

Almost surely, 2^61503089 is an apocalyptic number.

It is an amenable number.

61503089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61503089 is an equidigital number, since it uses as much as digits as its factorization.

61503089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 61503089 is about 7842.3905156527. The cubic root of 61503089 is about 394.7289471952.

The spelling of 61503089 in words is "sixty-one million, five hundred three thousand, eighty-nine".