133533450 has 36 divisors (see below), whose sum is σ = 358761078. Its totient is φ = 35608800.

The previous prime is 133533443. The next prime is 133533473. The reversal of 133533450 is 54335331.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 114896961 + 18636489 = 10719^2 + 4317^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 147921 + ... + 148820.

Almost surely, 2^133533450 is an apocalyptic number.

133533450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133533450 is an abundant number, since it is smaller than the sum of its proper divisors (225227628).

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

133533450 is a wasteful number, since it uses less digits than its factorization.

133533450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296759 (or 296751 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

The square root of 133533450 is about 11555.6674406977. The cubic root of 133533450 is about 511.1284126503.

Adding to 133533450 its reverse (54335331), we get a palindrome (187868781).

The spelling of 133533450 in words is "one hundred thirty-three million, five hundred thirty-three thousand, four hundred fifty".