133545204 has 72 divisors (see below), whose sum is σ = 369052320. Its totient is φ = 40468032.

The previous prime is 133545197. The next prime is 133545211. The reversal of 133545204 is 402545331.

133545204 is a `hidden beast` number, since 133 + 5 + 4 + 520 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (133545197) and next prime (133545211).

It is a super-2 number, since 2×133545204² = 35668643022803232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29227 + ... + 33485.

Almost surely, 2^133545204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133545204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184526160).

133545204 is an abundant number, since it is smaller than the sum of its proper divisors (235507116).

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

133545204 is a wasteful number, since it uses less digits than its factorization.

133545204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349 (or 4344 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 133545204 is about 11556.1760111206. The cubic root of 133545204 is about 511.1434092101.

The spelling of 133545204 in words is "one hundred thirty-three million, five hundred forty-five thousand, two hundred four".