61297161 has 8 divisors (see below), whose sum is σ = 82949664. Its totient is φ = 40254720.

The previous prime is 61297157. The next prime is 61297177. The reversal of 61297161 is 16179216.

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

It is not a de Polignac number, because 61297161 - 2² = 61297157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61297111) 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, 152280 + ... + 152681.

It is an arithmetic number, because the mean of its divisors is an integer number (10368708).

Almost surely, 2^61297161 is an apocalyptic number.

It is an amenable number.

61297161 is a deficient number, since it is larger than the sum of its proper divisors (21652503).

61297161 is a wasteful number, since it uses less digits than its factorization.

61297161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305031.

The product of its digits is 4536, while the sum is 33.

The square root of 61297161 is about 7829.2503472555. The cubic root of 61297161 is about 394.2879035833.

The spelling of 61297161 in words is "sixty-one million, two hundred ninety-seven thousand, one hundred sixty-one".