61198571 has 4 divisors (see below), whose sum is σ = 69941232. Its totient is φ = 52455912.

The previous prime is 61198567. The next prime is 61198591. The reversal of 61198571 is 17589116.

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 61198571 - 2² = 61198567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61198541) 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, 4371320 + ... + 4371333.

It is an arithmetic number, because the mean of its divisors is an integer number (17485308).

Almost surely, 2^61198571 is an apocalyptic number.

61198571 is a deficient number, since it is larger than the sum of its proper divisors (8742661).

61198571 is an equidigital number, since it uses as much as digits as its factorization.

61198571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742660.

The product of its digits is 15120, while the sum is 38.

The square root of 61198571 is about 7822.9515529626. The cubic root of 61198571 is about 394.0764000195.

The spelling of 61198571 in words is "sixty-one million, one hundred ninety-eight thousand, five hundred seventy-one".