61172319 has 8 divisors (see below), whose sum is σ = 87837232. Its totient is φ = 37644480.

The previous prime is 61172317. The next prime is 61172327. The reversal of 61172319 is 91327116.

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

It is not a de Polignac number, because 61172319 - 2¹ = 61172317 is a prime.

It is a super-2 number, since 2×61172319² = 7484105223675522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61172311) 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, 784222 + ... + 784299.

It is an arithmetic number, because the mean of its divisors is an integer number (10979654).

Almost surely, 2^61172319 is an apocalyptic number.

61172319 is a deficient number, since it is larger than the sum of its proper divisors (26664913).

61172319 is a wasteful number, since it uses less digits than its factorization.

61172319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568537.

The product of its digits is 2268, while the sum is 30.

The square root of 61172319 is about 7821.2734896563. The cubic root of 61172319 is about 394.0200437294.

The spelling of 61172319 in words is "sixty-one million, one hundred seventy-two thousand, three hundred nineteen".