61341509 has 2 divisors, whose sum is σ = 61341510. Its totient is φ = 61341508.

The previous prime is 61341503. The next prime is 61341517. The reversal of 61341509 is 90514316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51165409 + 10176100 = 7153^2 + 3190^2 .

It is a cyclic number.

It is not a de Polignac number, because 61341509 - 2⁴ = 61341493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61341503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30670754 + 30670755.

It is an arithmetic number, because the mean of its divisors is an integer number (30670755).

Almost surely, 2^61341509 is an apocalyptic number.

It is an amenable number.

61341509 is a deficient number, since it is larger than the sum of its proper divisors (1).

61341509 is an equidigital number, since it uses as much as digits as its factorization.

61341509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61341509 is about 7832.0820348104. The cubic root of 61341509 is about 394.3829686966.

The spelling of 61341509 in words is "sixty-one million, three hundred forty-one thousand, five hundred nine".