133451951 has 2 divisors, whose sum is σ = 133451952. Its totient is φ = 133451950.

The previous prime is 133451909. The next prime is 133451963. The reversal of 133451951 is 159154331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133451951 - 2¹⁸ = 133189807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133451051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66725975 + 66725976.

It is an arithmetic number, because the mean of its divisors is an integer number (66725976).

Almost surely, 2^133451951 is an apocalyptic number.

133451951 is a deficient number, since it is larger than the sum of its proper divisors (1).

133451951 is an equidigital number, since it uses as much as digits as its factorization.

133451951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 32.

The square root of 133451951 is about 11552.1405375800. The cubic root of 133451951 is about 511.0244064205.

The spelling of 133451951 in words is "one hundred thirty-three million, four hundred fifty-one thousand, nine hundred fifty-one".