61137147 has 8 divisors (see below), whose sum is σ = 81554256. Its totient is φ = 40739072.

The previous prime is 61137137. The next prime is 61137149. The reversal of 61137147 is 74173116.

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

It is a cyclic number.

It is not a de Polignac number, because 61137147 - 2¹¹ = 61135099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61137149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6643 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (10194282).

Almost surely, 2^61137147 is an apocalyptic number.

61137147 is a deficient number, since it is larger than the sum of its proper divisors (20417109).

61137147 is a wasteful number, since it uses less digits than its factorization.

61137147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9517.

The product of its digits is 3528, while the sum is 30.

The square root of 61137147 is about 7819.0246834244. The cubic root of 61137147 is about 393.9445132165.

The spelling of 61137147 in words is "sixty-one million, one hundred thirty-seven thousand, one hundred forty-seven".