133051555 has 32 divisors (see below), whose sum is σ = 197664768. Its totient is φ = 83721600.

The previous prime is 133051543. The next prime is 133051561. The reversal of 133051555 is 555150331.

It is not a de Polignac number, because 133051555 - 2¹¹ = 133049507 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86140 + ... + 87670.

It is an arithmetic number, because the mean of its divisors is an integer number (6177024).

Almost surely, 2^133051555 is an apocalyptic number.

133051555 is a deficient number, since it is larger than the sum of its proper divisors (64613213).

133051555 is a wasteful number, since it uses less digits than its factorization.

133051555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747.

The product of its (nonzero) digits is 5625, while the sum is 28.

The square root of 133051555 is about 11534.7975708289. The cubic root of 133051555 is about 510.5128187889.

The spelling of 133051555 in words is "one hundred thirty-three million, fifty-one thousand, five hundred fifty-five".