133450553 has 8 divisors (see below), whose sum is σ = 135185160. Its totient is φ = 131725440.

The previous prime is 133450549. The next prime is 133450573. The reversal of 133450553 is 355054331.

It can be written as a sum of positive squares in 4 ways, for example, as 89718784 + 43731769 = 9472^2 + 6613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133450553 - 2² = 133450549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133450523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28451 + ... + 32807.

It is an arithmetic number, because the mean of its divisors is an integer number (16898145).

Almost surely, 2^133450553 is an apocalyptic number.

It is an amenable number.

133450553 is a deficient number, since it is larger than the sum of its proper divisors (1734607).

133450553 is a wasteful number, since it uses less digits than its factorization.

133450553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 133450553 is about 11552.0800291549. The cubic root of 133450553 is about 511.0226219715.

The spelling of 133450553 in words is "one hundred thirty-three million, four hundred fifty thousand, five hundred fifty-three".