139513155 has 16 divisors (see below), whose sum is σ = 227971584. Its totient is φ = 72823520.

The previous prime is 139513151. The next prime is 139513159. The reversal of 139513155 is 551315931.

It is an interprime number because it is at equal distance from previous prime (139513151) and next prime (139513159).

It is not a de Polignac number, because 139513155 - 2² = 139513151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139513151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98241 + ... + 99650.

It is an arithmetic number, because the mean of its divisors is an integer number (14248224).

Almost surely, 2^139513155 is an apocalyptic number.

139513155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139513155 is a deficient number, since it is larger than the sum of its proper divisors (88458429).

139513155 is a wasteful number, since it uses less digits than its factorization.

139513155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197946.

The product of its digits is 10125, while the sum is 33.

The square root of 139513155 is about 11811.5686934463. The cubic root of 139513155 is about 518.6468207235.

The spelling of 139513155 in words is "one hundred thirty-nine million, five hundred thirteen thousand, one hundred fifty-five".