133986553 has 4 divisors (see below), whose sum is σ = 134126080. Its totient is φ = 133847028.

The previous prime is 133986551. The next prime is 133986599. The reversal of 133986553 is 355689331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133986553 - 2¹ = 133986551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133986551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68313 + ... + 70246.

It is an arithmetic number, because the mean of its divisors is an integer number (33531520).

Almost surely, 2^133986553 is an apocalyptic number.

It is an amenable number.

133986553 is a deficient number, since it is larger than the sum of its proper divisors (139527).

133986553 is an equidigital number, since it uses as much as digits as its factorization.

133986553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139526.

The product of its digits is 291600, while the sum is 43.

The square root of 133986553 is about 11575.2560662821. The cubic root of 133986553 is about 511.7058768571.

The spelling of 133986553 in words is "one hundred thirty-three million, nine hundred eighty-six thousand, five hundred fifty-three".