133052551 has 4 divisors (see below), whose sum is σ = 137640600. Its totient is φ = 128464504.

The previous prime is 133052531. The next prime is 133052561. The reversal of 133052551 is 155250331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133052551 - 2¹¹ = 133050503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133052531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2293981 + ... + 2294038.

It is an arithmetic number, because the mean of its divisors is an integer number (34410150).

Almost surely, 2^133052551 is an apocalyptic number.

133052551 is a deficient number, since it is larger than the sum of its proper divisors (4588049).

133052551 is an equidigital number, since it uses as much as digits as its factorization.

133052551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4588048.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 133052551 is about 11534.8407444576. The cubic root of 133052551 is about 510.5140926548.

The spelling of 133052551 in words is "one hundred thirty-three million, fifty-two thousand, five hundred fifty-one".