61130509 has 8 divisors (see below), whose sum is σ = 66803328. Its totient is φ = 55476960.

The previous prime is 61130497. The next prime is 61130539. The reversal of 61130509 is 90503116.

61130509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61130509 - 2¹¹ = 61128461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61130539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2284 + ... + 11290.

It is an arithmetic number, because the mean of its divisors is an integer number (8350416).

Almost surely, 2^61130509 is an apocalyptic number.

It is an amenable number.

61130509 is a deficient number, since it is larger than the sum of its proper divisors (5672819).

61130509 is a wasteful number, since it uses less digits than its factorization.

61130509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 61130509 is about 7818.6001944082. The cubic root of 61130509 is about 393.9302551184.

The spelling of 61130509 in words is "sixty-one million, one hundred thirty thousand, five hundred nine".