133512451 has 2 divisors, whose sum is σ = 133512452. Its totient is φ = 133512450.

The previous prime is 133512439. The next prime is 133512461. The reversal of 133512451 is 154215331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133512451 is a prime.

It is not a weakly prime, because it can be changed into another prime (133512461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66756225 + 66756226.

It is an arithmetic number, because the mean of its divisors is an integer number (66756226).

Almost surely, 2^133512451 is an apocalyptic number.

133512451 is a deficient number, since it is larger than the sum of its proper divisors (1).

133512451 is an equidigital number, since it uses as much as digits as its factorization.

133512451 is an evil number, because the sum of its binary digits is even.

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

The square root of 133512451 is about 11554.7588031945. The cubic root of 133512451 is about 511.1016184945.

Adding to 133512451 its reverse (154215331), we get a palindrome (287727782).

The spelling of 133512451 in words is "one hundred thirty-three million, five hundred twelve thousand, four hundred fifty-one".