27420501 has 4 divisors (see below), whose sum is σ = 36560672. Its totient is φ = 18280332.

The previous prime is 27420499. The next prime is 27420509. The reversal of 27420501 is 10502472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27420501 - 2¹ = 27420499 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 (27420509) 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, 4570081 + ... + 4570086.

It is an arithmetic number, because the mean of its divisors is an integer number (9140168).

Almost surely, 2^27420501 is an apocalyptic number.

It is an amenable number.

27420501 is a deficient number, since it is larger than the sum of its proper divisors (9140171).

27420501 is an equidigital number, since it uses as much as digits as its factorization.

27420501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9140170.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 27420501 is about 5236.4588225250. The cubic root of 27420501 is about 301.5493952497.

Adding to 27420501 its reverse (10502472), we get a palindrome (37922973).

The spelling of 27420501 in words is "twenty-seven million, four hundred twenty thousand, five hundred one".