133551201 has 16 divisors (see below), whose sum is σ = 215478144. Its totient is φ = 71825664.

The previous prime is 133551169. The next prime is 133551217. The reversal of 133551201 is 102155331.

It is not a de Polignac number, because 133551201 - 2⁵ = 133551169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (133551251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186690 + ... + 187403.

It is an arithmetic number, because the mean of its divisors is an integer number (13467384).

Almost surely, 2^133551201 is an apocalyptic number.

It is an amenable number.

133551201 is a deficient number, since it is larger than the sum of its proper divisors (81926943).

133551201 is a wasteful number, since it uses less digits than its factorization.

133551201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374120.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 133551201 is about 11556.4354798528. The cubic root of 133551201 is about 511.1510602552.

The spelling of 133551201 in words is "one hundred thirty-three million, five hundred fifty-one thousand, two hundred one".