135697250 has 64 divisors (see below), whose sum is σ = 280215936. Its totient is φ = 48888000.

The previous prime is 135697231. The next prime is 135697253. The reversal of 135697250 is 52796531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (135697253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139265 + ... + 140235.

It is an arithmetic number, because the mean of its divisors is an integer number (4378374).

Almost surely, 2^135697250 is an apocalyptic number.

135697250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135697250 is an abundant number, since it is smaller than the sum of its proper divisors (144518686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135697250 is a wasteful number, since it uses less digits than its factorization.

135697250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 135697250 is about 11648.9162586053. The cubic root of 135697250 is about 513.8744387896.

The spelling of 135697250 in words is "one hundred thirty-five million, six hundred ninety-seven thousand, two hundred fifty".