27740551 has 4 divisors (see below), whose sum is σ = 29200600. Its totient is φ = 26280504.

The previous prime is 27740539. The next prime is 27740563. The reversal of 27740551 is 15504772.

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

It is an interprime number because it is at equal distance from previous prime (27740539) and next prime (27740563).

It is a cyclic number.

It is not a de Polignac number, because 27740551 - 2⁵ = 27740519 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 (27740521) 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, 729996 + ... + 730033.

It is an arithmetic number, because the mean of its divisors is an integer number (7300150).

Almost surely, 2^27740551 is an apocalyptic number.

27740551 is a deficient number, since it is larger than the sum of its proper divisors (1460049).

27740551 is a wasteful number, since it uses less digits than its factorization.

27740551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460048.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 27740551 is about 5266.9299406770. The cubic root of 27740551 is about 302.7180805672.

The spelling of 27740551 in words is "twenty-seven million, seven hundred forty thousand, five hundred fifty-one".