61501147 has 8 divisors (see below), whose sum is σ = 63161856. Its totient is φ = 59859072.

The previous prime is 61501093. The next prime is 61501159. The reversal of 61501147 is 74110516.

It is a happy number.

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-61501147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61501177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (7895232).

Almost surely, 2^61501147 is an apocalyptic number.

61501147 is a deficient number, since it is larger than the sum of its proper divisors (1660709).

61501147 is a wasteful number, since it uses less digits than its factorization.

61501147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 61501147 is about 7842.2667003871. The cubic root of 61501147 is about 394.7247925438.

The spelling of 61501147 in words is "sixty-one million, five hundred one thousand, one hundred forty-seven".