61048609 has 2 divisors, whose sum is σ = 61048610. Its totient is φ = 61048608.

The previous prime is 61048583. The next prime is 61048621. The reversal of 61048609 is 90684016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 29160000 = 5647^2 + 5400^2 .

It is a cyclic number.

It is not a de Polignac number, because 61048609 - 2¹⁷ = 60917537 is a prime.

It is not a weakly prime, because it can be changed into another prime (61048639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30524304 + 30524305.

It is an arithmetic number, because the mean of its divisors is an integer number (30524305).

Almost surely, 2^61048609 is an apocalyptic number.

It is an amenable number.

61048609 is a deficient number, since it is larger than the sum of its proper divisors (1).

61048609 is an equidigital number, since it uses as much as digits as its factorization.

61048609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 61048609 is about 7813.3609285633. The cubic root of 61048609 is about 393.7542529481.

The spelling of 61048609 in words is "sixty-one million, forty-eight thousand, six hundred nine".