139553533 has 8 divisors (see below), whose sum is σ = 163199168. Its totient is φ = 116835264.

The previous prime is 139553507. The next prime is 139553551. The reversal of 139553533 is 335355931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139553533 - 2¹⁷ = 139422461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139553492 and 139553501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139553503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231516 + ... + 232117.

It is an arithmetic number, because the mean of its divisors is an integer number (20399896).

Almost surely, 2^139553533 is an apocalyptic number.

It is an amenable number.

139553533 is a deficient number, since it is larger than the sum of its proper divisors (23645635).

139553533 is an equidigital number, since it uses as much as digits as its factorization.

139553533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463683.

The product of its digits is 91125, while the sum is 37.

The square root of 139553533 is about 11813.2778262428. The cubic root of 139553533 is about 518.6968516120.

The spelling of 139553533 in words is "one hundred thirty-nine million, five hundred fifty-three thousand, five hundred thirty-three".