132451691 has 2 divisors, whose sum is σ = 132451692. Its totient is φ = 132451690.

The previous prime is 132451667. The next prime is 132451699. The reversal of 132451691 is 196154231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 132451691 - 2²² = 128257387 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (132451699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66225845 + 66225846.

It is an arithmetic number, because the mean of its divisors is an integer number (66225846).

Almost surely, 2^132451691 is an apocalyptic number.

132451691 is a deficient number, since it is larger than the sum of its proper divisors (1).

132451691 is an equidigital number, since it uses as much as digits as its factorization.

132451691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 132451691 is about 11508.7658330509. The cubic root of 132451691 is about 509.7444458485.

The spelling of 132451691 in words is "one hundred thirty-two million, four hundred fifty-one thousand, six hundred ninety-one".