139522006 has 48 divisors (see below), whose sum is σ = 236087568. Its totient is φ = 61776000.

The previous prime is 139522001. The next prime is 139522013. The reversal of 139522006 is 600225931.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139522001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1381356 + ... + 1381456.

It is an arithmetic number, because the mean of its divisors is an integer number (4918491).

Almost surely, 2^139522006 is an apocalyptic number.

139522006 is a deficient number, since it is larger than the sum of its proper divisors (96565562).

139522006 is a wasteful number, since it uses less digits than its factorization.

139522006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 139522006 is about 11811.9433625462. The cubic root of 139522006 is about 518.6577884967.

Adding to 139522006 its reverse (600225931), we get a palindrome (739747937).

The spelling of 139522006 in words is "one hundred thirty-nine million, five hundred twenty-two thousand, six".