61159791 has 48 divisors (see below), whose sum is σ = 104734080. Its totient is φ = 31389120.

The previous prime is 61159789. The next prime is 61159817. The reversal of 61159791 is 19795116.

It is not a de Polignac number, because 61159791 - 2¹ = 61159789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61159291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176080 + ... + 176426.

It is an arithmetic number, because the mean of its divisors is an integer number (2181960).

Almost surely, 2^61159791 is an apocalyptic number.

61159791 is a deficient number, since it is larger than the sum of its proper divisors (43574289).

61159791 is a wasteful number, since it uses less digits than its factorization.

61159791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 477 counting only the distinct ones).

The product of its digits is 17010, while the sum is 39.

The square root of 61159791 is about 7820.4725560544. The cubic root of 61159791 is about 393.9931436532.

The spelling of 61159791 in words is "sixty-one million, one hundred fifty-nine thousand, seven hundred ninety-one".