137999572 has 12 divisors (see below), whose sum is σ = 243989620. Its totient is φ = 68288256.

The previous prime is 137999539. The next prime is 137999579. The reversal of 137999572 is 275999731.

It can be written as a sum of positive squares in 2 ways, for example, as 98485776 + 39513796 = 9924^2 + 6286^2 .

It is a hoax number, since the sum of its digits (52) 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 (137999579) 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, 177447 + ... + 178222.

Almost surely, 2^137999572 is an apocalyptic number.

It is an amenable number.

137999572 is a deficient number, since it is larger than the sum of its proper divisors (105990048).

137999572 is a wasteful number, since it uses less digits than its factorization.

137999572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355770 (or 355768 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 52.

The square root of 137999572 is about 11747.3219075668. The cubic root of 137999572 is about 516.7643909957.

The spelling of 137999572 in words is "one hundred thirty-seven million, nine hundred ninety-nine thousand, five hundred seventy-two".