139555563 has 16 divisors (see below), whose sum is σ = 213062400. Its totient is φ = 79593696.

The previous prime is 139555561. The next prime is 139555621. The reversal of 139555563 is 365555931.

It is a happy number.

139555563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139555563 - 2¹ = 139555561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139555561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5413 + ... + 17561.

It is an arithmetic number, because the mean of its divisors is an integer number (13316400).

Almost surely, 2^139555563 is an apocalyptic number.

139555563 is a deficient number, since it is larger than the sum of its proper divisors (73506837).

139555563 is a wasteful number, since it uses less digits than its factorization.

139555563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12706.

The product of its digits is 303750, while the sum is 42.

The square root of 139555563 is about 11813.3637461986. The cubic root of 139555563 is about 518.6993666553.

The spelling of 139555563 in words is "one hundred thirty-nine million, five hundred fifty-five thousand, five hundred sixty-three".