61061163 has 4 divisors (see below), whose sum is σ = 81414888. Its totient is φ = 40707440.

The previous prime is 61061149. The next prime is 61061173. The reversal of 61061163 is 36116016.

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 61061163 - 2¹⁸ = 60799019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61061123) 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, 10176858 + ... + 10176863.

It is an arithmetic number, because the mean of its divisors is an integer number (20353722).

Almost surely, 2^61061163 is an apocalyptic number.

61061163 is a deficient number, since it is larger than the sum of its proper divisors (20353725).

61061163 is a wasteful number, since it uses less digits than its factorization.

61061163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20353724.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 61061163 is about 7814.1642547364. The cubic root of 61061163 is about 393.7812415624.

Adding to 61061163 its reverse (36116016), we get a palindrome (97177179).

The spelling of 61061163 in words is "sixty-one million, sixty-one thousand, one hundred sixty-three".