137961573 has 8 divisors (see below), whose sum is σ = 184423200. Its totient is φ = 91737168.

The previous prime is 137961559. The next prime is 137961589. The reversal of 137961573 is 375169731.

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

It is not a de Polignac number, because 137961573 - 2⁴ = 137961557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137961533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57943 + ... + 60276.

It is an arithmetic number, because the mean of its divisors is an integer number (23052900).

Almost surely, 2^137961573 is an apocalyptic number.

It is an amenable number.

137961573 is a deficient number, since it is larger than the sum of its proper divisors (46461627).

137961573 is a wasteful number, since it uses less digits than its factorization.

137961573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118611.

The product of its digits is 119070, while the sum is 42.

The square root of 137961573 is about 11745.7044488613. The cubic root of 137961573 is about 516.7169552624.

The spelling of 137961573 in words is "one hundred thirty-seven million, nine hundred sixty-one thousand, five hundred seventy-three".