133554061 has 4 divisors (see below), whose sum is σ = 133840512. Its totient is φ = 133267612.

The previous prime is 133554049. The next prime is 133554067. The reversal of 133554061 is 160455331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160455331 = 1087 ⋅147613.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133554061 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 (133554067) 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, 142525 + ... + 143458.

It is an arithmetic number, because the mean of its divisors is an integer number (33460128).

Almost surely, 2^133554061 is an apocalyptic number.

It is an amenable number.

133554061 is a deficient number, since it is larger than the sum of its proper divisors (286451).

133554061 is an equidigital number, since it uses as much as digits as its factorization.

133554061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286450.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 133554061 is about 11556.5592197678. The cubic root of 133554061 is about 511.1547089972.

The spelling of 133554061 in words is "one hundred thirty-three million, five hundred fifty-four thousand, sixty-one".