61193291 has 4 divisors (see below), whose sum is σ = 61222272. Its totient is φ = 61164312.

The previous prime is 61193273. The next prime is 61193303. The reversal of 61193291 is 19239116.

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 61193291 - 2¹⁰ = 61192267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61193191) 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, 11051 + ... + 15636.

It is an arithmetic number, because the mean of its divisors is an integer number (15305568).

Almost surely, 2^61193291 is an apocalyptic number.

61193291 is a deficient number, since it is larger than the sum of its proper divisors (28981).

61193291 is a wasteful number, since it uses less digits than its factorization.

61193291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28980.

The product of its digits is 2916, while the sum is 32.

The square root of 61193291 is about 7822.6140771484. The cubic root of 61193291 is about 394.0650665128.

The spelling of 61193291 in words is "sixty-one million, one hundred ninety-three thousand, two hundred ninety-one".