61171377 has 8 divisors (see below), whose sum is σ = 82944480. Its totient is φ = 40089600.

The previous prime is 61171361. The next prime is 61171403. The reversal of 61171377 is 77317116.

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

It is not a de Polignac number, because 61171377 - 2⁴ = 61171361 is a prime.

It is a super-2 number, since 2×61171377² = 7483874728152258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61171337) 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, 172624 + ... + 172977.

It is an arithmetic number, because the mean of its divisors is an integer number (10368060).

Almost surely, 2^61171377 is an apocalyptic number.

It is an amenable number.

61171377 is a deficient number, since it is larger than the sum of its proper divisors (21773103).

61171377 is a wasteful number, since it uses less digits than its factorization.

61171377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345663.

The product of its digits is 6174, while the sum is 33.

The square root of 61171377 is about 7821.2132690523. The cubic root of 61171377 is about 394.0180211981.

The spelling of 61171377 in words is "sixty-one million, one hundred seventy-one thousand, three hundred seventy-seven".