52139555 has 8 divisors (see below), whose sum is σ = 67380432. Its totient is φ = 38503008.

The previous prime is 52139531. The next prime is 52139569. The reversal of 52139555 is 55593125.

52139555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 52139555 - 2⁶ = 52139491 is a prime.

It is a super-3 number, since 3×52139555³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 401009 + ... + 401138.

It is an arithmetic number, because the mean of its divisors is an integer number (8422554).

Almost surely, 2^52139555 is an apocalyptic number.

52139555 is a deficient number, since it is larger than the sum of its proper divisors (15240877).

52139555 is a wasteful number, since it uses less digits than its factorization.

52139555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802165.

The product of its digits is 33750, while the sum is 35.

The square root of 52139555 is about 7220.7724656023. The cubic root of 52139555 is about 373.5847216484.

The spelling of 52139555 in words is "fifty-two million, one hundred thirty-nine thousand, five hundred fifty-five".