197507135 has 16 divisors (see below), whose sum is σ = 273501696. Its totient is φ = 134116128.

The previous prime is 197507117. The next prime is 197507137. The reversal of 197507135 is 531705791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197507135 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 (197507137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23789 + ... + 30998.

It is an arithmetic number, because the mean of its divisors is an integer number (17093856).

Almost surely, 2^197507135 is an apocalyptic number.

197507135 is a deficient number, since it is larger than the sum of its proper divisors (75994561).

197507135 is a wasteful number, since it uses less digits than its factorization.

197507135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54902.

The product of its (nonzero) digits is 33075, while the sum is 38.

The square root of 197507135 is about 14053.7231721704. The cubic root of 197507135 is about 582.3636550231.

The spelling of 197507135 in words is "one hundred ninety-seven million, five hundred seven thousand, one hundred thirty-five".