133214551 has 4 divisors (see below), whose sum is σ = 139006512. Its totient is φ = 127422592.

The previous prime is 133214539. The next prime is 133214611. The reversal of 133214551 is 155412331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155412331 = 31 ⋅5013301.

It is a cyclic number.

It is not a de Polignac number, because 133214551 - 2⁵ = 133214519 is a prime.

It is a super-2 number, since 2×133214551² = 35492233196263202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133214351) 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, 2895946 + ... + 2895991.

It is an arithmetic number, because the mean of its divisors is an integer number (34751628).

Almost surely, 2^133214551 is an apocalyptic number.

133214551 is a deficient number, since it is larger than the sum of its proper divisors (5791961).

133214551 is an equidigital number, since it uses as much as digits as its factorization.

133214551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791960.

The product of its digits is 1800, while the sum is 25.

The square root of 133214551 is about 11541.8608118449. The cubic root of 133214551 is about 510.7212031525.

Adding to 133214551 its reverse (155412331), we get a palindrome (288626882).

The spelling of 133214551 in words is "one hundred thirty-three million, two hundred fourteen thousand, five hundred fifty-one".