133053550 has 48 divisors (see below), whose sum is σ = 291981312. Its totient is φ = 44143200.

The previous prime is 133053527. The next prime is 133053559. The reversal of 133053550 is 55350331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133053559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4719 + ... + 16981.

It is an arithmetic number, because the mean of its divisors is an integer number (6082944).

Almost surely, 2^133053550 is an apocalyptic number.

133053550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133053550 is an abundant number, since it is smaller than the sum of its proper divisors (158927762).

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

133053550 is a wasteful number, since it uses less digits than its factorization.

133053550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12313 (or 12308 counting only the distinct ones).

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 133053550 is about 11534.8840479651. The cubic root of 133053550 is about 510.5153703512.

The spelling of 133053550 in words is "one hundred thirty-three million, fifty-three thousand, five hundred fifty".