117201537 has 36 divisors (see below), whose sum is σ = 179437440. Its totient is φ = 73701936.

The previous prime is 117201517. The next prime is 117201541. The reversal of 117201537 is 735102711.

It is a happy number.

It is not a de Polignac number, because 117201537 - 2¹² = 117197441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117201537.

It is not an unprimeable number, because it can be changed into a prime (117201517) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 490264 + ... + 490502.

Almost surely, 2^117201537 is an apocalyptic number.

It is an amenable number.

117201537 is a deficient number, since it is larger than the sum of its proper divisors (62235903).

117201537 is a wasteful number, since it uses less digits than its factorization.

117201537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 117201537 is about 10825.9658691500. The cubic root of 117201537 is about 489.3779932094.

The spelling of 117201537 in words is "one hundred seventeen million, two hundred one thousand, five hundred thirty-seven".