132451666 has 4 divisors (see below), whose sum is σ = 198677502. Its totient is φ = 66225832.

The previous prime is 132451651. The next prime is 132451667. The reversal of 132451666 is 666154231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121462441 + 10989225 = 11021^2 + 3315^2 .

It is not an unprimeable number, because it can be changed into a prime (132451667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33112915 + ... + 33112918.

Almost surely, 2^132451666 is an apocalyptic number.

132451666 is a deficient number, since it is larger than the sum of its proper divisors (66225836).

132451666 is an equidigital number, since it uses as much as digits as its factorization.

132451666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66225835.

The product of its digits is 25920, while the sum is 34.

The square root of 132451666 is about 11508.7647469222. The cubic root of 132451666 is about 509.7444137774.

The spelling of 132451666 in words is "one hundred thirty-two million, four hundred fifty-one thousand, six hundred sixty-six".