133550651 has 4 divisors (see below), whose sum is σ = 143823792. Its totient is φ = 123277512.

The previous prime is 133550633. The next prime is 133550663. The reversal of 133550651 is 156055331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156055331 = 157 ⋅993983.

It is a cyclic number.

It is not a de Polignac number, because 133550651 - 2⁶ = 133550587 is a prime.

It is a super-3 number, since 3×133550651³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133550671) 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, 5136551 + ... + 5136576.

It is an arithmetic number, because the mean of its divisors is an integer number (35955948).

Almost surely, 2^133550651 is an apocalyptic number.

133550651 is a deficient number, since it is larger than the sum of its proper divisors (10273141).

133550651 is a wasteful number, since it uses less digits than its factorization.

133550651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10273140.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 133550651 is about 11556.4116835634. The cubic root of 133550651 is about 511.1503585681.

The spelling of 133550651 in words is "one hundred thirty-three million, five hundred fifty thousand, six hundred fifty-one".