61089089 has 2 divisors, whose sum is σ = 61089090. Its totient is φ = 61089088.

The previous prime is 61089073. The next prime is 61089107. The reversal of 61089089 is 98098016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 21298225 = 6308^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 61089089 - 2⁴ = 61089073 is a prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30544544 + 30544545.

It is an arithmetic number, because the mean of its divisors is an integer number (30544545).

Almost surely, 2^61089089 is an apocalyptic number.

It is an amenable number.

61089089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61089089 is an equidigital number, since it uses as much as digits as its factorization.

61089089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 61089089 is about 7815.9509338276. The cubic root of 61089089 is about 393.8412636693.

The spelling of 61089089 in words is "sixty-one million, eighty-nine thousand, eighty-nine".