133253756 has 6 divisors (see below), whose sum is σ = 233194080. Its totient is φ = 66626876.

The previous prime is 133253749. The next prime is 133253777. The reversal of 133253756 is 657352331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16656716 + ... + 16656723.

It is an arithmetic number, because the mean of its divisors is an integer number (38865680).

Almost surely, 2^133253756 is an apocalyptic number.

It is an amenable number.

133253756 is a deficient number, since it is larger than the sum of its proper divisors (99940324).

133253756 is a wasteful number, since it uses less digits than its factorization.

133253756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33313443 (or 33313441 counting only the distinct ones).

The product of its digits is 56700, while the sum is 35.

The square root of 133253756 is about 11543.5590698883. The cubic root of 133253756 is about 510.7712999342.

The spelling of 133253756 in words is "one hundred thirty-three million, two hundred fifty-three thousand, seven hundred fifty-six".