27145407 has 4 divisors (see below), whose sum is σ = 36193880. Its totient is φ = 18096936.

The previous prime is 27145397. The next prime is 27145411. The reversal of 27145407 is 70454172.

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

It is not a de Polignac number, because 27145407 - 2¹⁴ = 27129023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27145477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524232 + ... + 4524237.

It is an arithmetic number, because the mean of its divisors is an integer number (9048470).

Almost surely, 2^27145407 is an apocalyptic number.

27145407 is a deficient number, since it is larger than the sum of its proper divisors (9048473).

27145407 is an equidigital number, since it uses as much as digits as its factorization.

27145407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048472.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 27145407 is about 5210.1254303519. The cubic root of 27145407 is about 300.5375805595.

Adding to 27145407 its reverse (70454172), we get a palindrome (97599579).

The spelling of 27145407 in words is "twenty-seven million, one hundred forty-five thousand, four hundred seven".