61060591 has 4 divisors (see below), whose sum is σ = 61076232. Its totient is φ = 61044952.

The previous prime is 61060553. The next prime is 61060621. The reversal of 61060591 is 19506016.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61060591 - 2⁷ = 61060463 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 (61060511) 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, 3456 + ... + 11578.

It is an arithmetic number, because the mean of its divisors is an integer number (15269058).

Almost surely, 2^61060591 is an apocalyptic number.

61060591 is a deficient number, since it is larger than the sum of its proper divisors (15641).

61060591 is an equidigital number, since it uses as much as digits as its factorization.

61060591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15640.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 61060591 is about 7814.1276544474. The cubic root of 61060591 is about 393.7800119561.

The spelling of 61060591 in words is "sixty-one million, sixty thousand, five hundred ninety-one".