61593191 has 4 divisors (see below), whose sum is σ = 67192584. Its totient is φ = 55993800.

The previous prime is 61593179. The next prime is 61593209. The reversal of 61593191 is 19139516.

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 61593191 - 2¹⁴ = 61576807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61593101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2799680 + ... + 2799701.

It is an arithmetic number, because the mean of its divisors is an integer number (16798146).

Almost surely, 2^61593191 is an apocalyptic number.

61593191 is a deficient number, since it is larger than the sum of its proper divisors (5599393).

61593191 is a wasteful number, since it uses less digits than its factorization.

61593191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599392.

The product of its digits is 7290, while the sum is 35.

The square root of 61593191 is about 7848.1329626861. The cubic root of 61593191 is about 394.9216123893.

The spelling of 61593191 in words is "sixty-one million, five hundred ninety-three thousand, one hundred ninety-one".