133375437 has 32 divisors (see below), whose sum is σ = 220147200. Its totient is φ = 79240896.

The previous prime is 133375427. The next prime is 133375447. The reversal of 133375437 is 734573331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133375427) and next prime (133375447).

It is not a de Polignac number, because 133375437 - 2⁸ = 133375181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133375427) 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 31 ways as a sum of consecutive naturals, for example, 3628 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^133375437 is an apocalyptic number.

It is an amenable number.

133375437 is a deficient number, since it is larger than the sum of its proper divisors (86771763).

133375437 is a wasteful number, since it uses less digits than its factorization.

133375437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13154 (or 13148 counting only the distinct ones).

The product of its digits is 79380, while the sum is 36.

The square root of 133375437 is about 11548.8283821347. The cubic root of 133375437 is about 510.9267233313.

The spelling of 133375437 in words is "one hundred thirty-three million, three hundred seventy-five thousand, four hundred thirty-seven".