27432101 has 4 divisors (see below), whose sum is σ = 29045772. Its totient is φ = 25818432.

The previous prime is 27432079. The next prime is 27432103. The reversal of 27432101 is 10123472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12609601 + 14822500 = 3551^2 + 3850^2 .

It is a cyclic number.

It is not a de Polignac number, because 27432101 - 2⁶ = 27432037 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27432103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806810 + ... + 806843.

It is an arithmetic number, because the mean of its divisors is an integer number (7261443).

Almost surely, 2^27432101 is an apocalyptic number.

It is an amenable number.

27432101 is a deficient number, since it is larger than the sum of its proper divisors (1613671).

27432101 is a wasteful number, since it uses less digits than its factorization.

27432101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613670.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 27432101 is about 5237.5663241624. The cubic root of 27432101 is about 301.5919118548.

Adding to 27432101 its reverse (10123472), we get a palindrome (37555573).

The spelling of 27432101 in words is "twenty-seven million, four hundred thirty-two thousand, one hundred one".