27101381 has 4 divisors (see below), whose sum is σ = 27125292. Its totient is φ = 27077472.

The previous prime is 27101363. The next prime is 27101387. The reversal of 27101381 is 18310172.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11498881 + 15602500 = 3391^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 27101381 - 2⁶ = 27101317 is a prime.

It is a super-2 number, since 2×27101381² = 1468969704214322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27101387) 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, 10166 + ... + 12551.

It is an arithmetic number, because the mean of its divisors is an integer number (6781323).

Almost surely, 2^27101381 is an apocalyptic number.

It is an amenable number.

27101381 is a deficient number, since it is larger than the sum of its proper divisors (23911).

27101381 is a wasteful number, since it uses less digits than its factorization.

27101381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23910.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 27101381 is about 5205.8986736201. The cubic root of 27101381 is about 300.3750161993.

The spelling of 27101381 in words is "twenty-seven million, one hundred one thousand, three hundred eighty-one".