139161563 has 4 divisors (see below), whose sum is σ = 139209840. Its totient is φ = 139113288.

The previous prime is 139161559. The next prime is 139161577. The reversal of 139161563 is 365161931.

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 139161563 - 2² = 139161559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139161553) 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, 19520 + ... + 25677.

It is an arithmetic number, because the mean of its divisors is an integer number (34802460).

Almost surely, 2^139161563 is an apocalyptic number.

139161563 is a deficient number, since it is larger than the sum of its proper divisors (48277).

139161563 is an equidigital number, since it uses as much as digits as its factorization.

139161563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48276.

The product of its digits is 14580, while the sum is 35.

The square root of 139161563 is about 11796.6759301084. The cubic root of 139161563 is about 518.2107675265.

The spelling of 139161563 in words is "one hundred thirty-nine million, one hundred sixty-one thousand, five hundred sixty-three".