27551401 has 8 divisors (see below), whose sum is σ = 28929600. Its totient is φ = 26188272.

The previous prime is 27551399. The next prime is 27551411. The reversal of 27551401 is 10415572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27551401 - 2¹ = 27551399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27551411) 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, 75 + ... + 7423.

It is an arithmetic number, because the mean of its divisors is an integer number (3616200).

Almost surely, 2^27551401 is an apocalyptic number.

It is an amenable number.

27551401 is a deficient number, since it is larger than the sum of its proper divisors (1378199).

27551401 is a wasteful number, since it uses less digits than its factorization.

27551401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 27551401 is about 5248.9428459453. The cubic root of 27551401 is about 302.0284792522.

Adding to 27551401 its reverse (10415572), we get a palindrome (37966973).

The spelling of 27551401 in words is "twenty-seven million, five hundred fifty-one thousand, four hundred one".