137729557 has 8 divisors (see below), whose sum is σ = 157643136. Its totient is φ = 117875472.

The previous prime is 137729549. The next prime is 137729561. The reversal of 137729557 is 755927731.

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

It is a cyclic number.

It is not a de Polignac number, because 137729557 - 2³ = 137729549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137729057) 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, 9793 + ... + 19270.

It is an arithmetic number, because the mean of its divisors is an integer number (19705392).

Almost surely, 2^137729557 is an apocalyptic number.

It is an amenable number.

137729557 is a deficient number, since it is larger than the sum of its proper divisors (19913579).

137729557 is an equidigital number, since it uses as much as digits as its factorization.

137729557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29747.

The product of its digits is 463050, while the sum is 46.

The square root of 137729557 is about 11735.8236609111. The cubic root of 137729557 is about 516.4271309112.

The spelling of 137729557 in words is "one hundred thirty-seven million, seven hundred twenty-nine thousand, five hundred fifty-seven".