61170971 has 4 divisors (see below), whose sum is σ = 61192944. Its totient is φ = 61149000.

The previous prime is 61170877. The next prime is 61171001. The reversal of 61170971 is 17907116.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61170971 - 2¹⁰ = 61169947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61170871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6080 + ... + 12621.

It is an arithmetic number, because the mean of its divisors is an integer number (15298236).

Almost surely, 2^61170971 is an apocalyptic number.

61170971 is a deficient number, since it is larger than the sum of its proper divisors (21973).

61170971 is a wasteful number, since it uses less digits than its factorization.

61170971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21972.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 61170971 is about 7821.1873139569. The cubic root of 61170971 is about 394.0171494850.

The spelling of 61170971 in words is "sixty-one million, one hundred seventy thousand, nine hundred seventy-one".