139061533 has 4 divisors (see below), whose sum is σ = 149758588. Its totient is φ = 128364480.

The previous prime is 139061501. The next prime is 139061539. The reversal of 139061533 is 335160931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17665209 + 121396324 = 4203^2 + 11018^2 .

It is a cyclic number.

It is not a de Polignac number, because 139061533 - 2⁵ = 139061501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139061495 and 139061504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139061539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5348508 + ... + 5348533.

It is an arithmetic number, because the mean of its divisors is an integer number (37439647).

Almost surely, 2^139061533 is an apocalyptic number.

139061533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139061533 is a deficient number, since it is larger than the sum of its proper divisors (10697055).

139061533 is a wasteful number, since it uses less digits than its factorization.

139061533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10697054.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 139061533 is about 11792.4354142815. The cubic root of 139061533 is about 518.0865736350.

The spelling of 139061533 in words is "one hundred thirty-nine million, sixty-one thousand, five hundred thirty-three".