27550442 has 16 divisors (see below), whose sum is σ = 42525000. Its totient is φ = 13378560.

The previous prime is 27550379. The next prime is 27550447. The reversal of 27550442 is 24405572.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8462281 + 19088161 = 2909^2 + 4369^2 .

It is not an unprimeable number, because it can be changed into a prime (27550447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21434 + ... + 22682.

Almost surely, 2^27550442 is an apocalyptic number.

27550442 is a deficient number, since it is larger than the sum of its proper divisors (14974558).

27550442 is a wasteful number, since it uses less digits than its factorization.

27550442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 27550442 is about 5248.8514934222. The cubic root of 27550442 is about 302.0249749093.

The spelling of 27550442 in words is "twenty-seven million, five hundred fifty thousand, four hundred forty-two".