137120557 has 8 divisors (see below), whose sum is σ = 160944896. Its totient is φ = 114355152.

The previous prime is 137120539. The next prime is 137120567. The reversal of 137120557 is 755021731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137120557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137120567) 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, 264453 + ... + 264970.

It is an arithmetic number, because the mean of its divisors is an integer number (20118112).

Almost surely, 2^137120557 is an apocalyptic number.

It is an amenable number.

137120557 is a deficient number, since it is larger than the sum of its proper divisors (23824339).

137120557 is an equidigital number, since it uses as much as digits as its factorization.

137120557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529467.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 137120557 is about 11709.8487180663. The cubic root of 137120557 is about 515.6648427957.

The spelling of 137120557 in words is "one hundred thirty-seven million, one hundred twenty thousand, five hundred fifty-seven".