61507117 has 8 divisors (see below), whose sum is σ = 70416000. Its totient is φ = 52628784.

The previous prime is 61507097. The next prime is 61507141. The reversal of 61507117 is 71170516.

61507117 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61507117 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 (61507417) 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, 3142 + ... + 11527.

It is an arithmetic number, because the mean of its divisors is an integer number (8802000).

Almost surely, 2^61507117 is an apocalyptic number.

It is an amenable number.

61507117 is a deficient number, since it is larger than the sum of its proper divisors (8908883).

61507117 is a wasteful number, since it uses less digits than its factorization.

61507117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15275.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 61507117 is about 7842.6473208987. The cubic root of 61507117 is about 394.7375642881.

The spelling of 61507117 in words is "sixty-one million, five hundred seven thousand, one hundred seventeen".