133105250 has 16 divisors (see below), whose sum is σ = 249173496. Its totient is φ = 53242000.

The previous prime is 133105249. The next prime is 133105277. The reversal of 133105250 is 52501331.

It can be written as a sum of positive squares in 4 ways, for example, as 37319881 + 95785369 = 6109^2 + 9787^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265961 + ... + 266460.

Almost surely, 2^133105250 is an apocalyptic number.

133105250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133105250 is a deficient number, since it is larger than the sum of its proper divisors (116068246).

133105250 is an equidigital number, since it uses as much as digits as its factorization.

133105250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532438 (or 532428 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 133105250 is about 11537.1248584732. The cubic root of 133105250 is about 510.5814846508.

Adding to 133105250 its reverse (52501331), we get a palindrome (185606581).

The spelling of 133105250 in words is "one hundred thirty-three million, one hundred five thousand, two hundred fifty".