137981501 has 12 divisors (see below), whose sum is σ = 161148348. Its totient is φ = 117798912.

The previous prime is 137981497. The next prime is 137981533. The reversal of 137981501 is 105189731.

It can be written as a sum of positive squares in 2 ways, for example, as 117722500 + 20259001 = 10850^2 + 4501^2 .

It is not a de Polignac number, because 137981501 - 2² = 137981497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137971501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7115 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (13429029).

Almost surely, 2^137981501 is an apocalyptic number.

It is an amenable number.

137981501 is a deficient number, since it is larger than the sum of its proper divisors (23166847).

137981501 is a wasteful number, since it uses less digits than its factorization.

137981501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11228 (or 11221 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 137981501 is about 11746.5527283540. The cubic root of 137981501 is about 516.7418333003.

The spelling of 137981501 in words is "one hundred thirty-seven million, nine hundred eighty-one thousand, five hundred one".