133450520 has 48 divisors (see below), whose sum is σ = 349291440. Its totient is φ = 45753792.

The previous prime is 133450519. The next prime is 133450523. The reversal of 133450520 is 25054331.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 32084 + ... + 36003.

It is an arithmetic number, because the mean of its divisors is an integer number (7276905).

Almost surely, 2^133450520 is an apocalyptic number.

133450520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133450520 is an abundant number, since it is smaller than the sum of its proper divisors (215840920).

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

133450520 is a wasteful number, since it uses less digits than its factorization.

133450520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68112 (or 68101 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 133450520 is about 11552.0786008406. The cubic root of 133450520 is about 511.0225798492.

The spelling of 133450520 in words is "one hundred thirty-three million, four hundred fifty thousand, five hundred twenty".