27145001 has 4 divisors (see below), whose sum is σ = 29233092. Its totient is φ = 25056912.

The previous prime is 27144967. The next prime is 27145003. The reversal of 27145001 is 10054172.

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 6451600 + 20693401 = 2540^2 + 4549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27145001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27145003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1044026 + ... + 1044051.

It is an arithmetic number, because the mean of its divisors is an integer number (7308273).

Almost surely, 2^27145001 is an apocalyptic number.

It is an amenable number.

27145001 is a deficient number, since it is larger than the sum of its proper divisors (2088091).

27145001 is a wasteful number, since it uses less digits than its factorization.

27145001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088090.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 27145001 is about 5210.0864676126. The cubic root of 27145001 is about 300.5360822230.

Adding to 27145001 its reverse (10054172), we get a palindrome (37199173).

The spelling of 27145001 in words is "twenty-seven million, one hundred forty-five thousand, one".