138572558 has 8 divisors (see below), whose sum is σ = 208914552. Its totient is φ = 68934376.

The previous prime is 138572509. The next prime is 138572561. The reversal of 138572558 is 855275831.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 175460 + ... + 176247.

It is an arithmetic number, because the mean of its divisors is an integer number (26114319).

Almost surely, 2^138572558 is an apocalyptic number.

138572558 is a deficient number, since it is larger than the sum of its proper divisors (70341994).

138572558 is a wasteful number, since it uses less digits than its factorization.

138572558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351906.

The product of its digits is 336000, while the sum is 44.

The square root of 138572558 is about 11771.6845863283. The cubic root of 138572558 is about 517.4786200102.

The spelling of 138572558 in words is "one hundred thirty-eight million, five hundred seventy-two thousand, five hundred fifty-eight".