27772001 has 8 divisors (see below), whose sum is σ = 28934400. Its totient is φ = 26626320.

The previous prime is 27771923. The next prime is 27772007. The reversal of 27772001 is 10027772.

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 27772001 - 2¹⁴ = 27755617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27772007) 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, 731 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (3616800).

Almost surely, 2^27772001 is an apocalyptic number.

It is an amenable number.

27772001 is a deficient number, since it is larger than the sum of its proper divisors (1162399).

27772001 is a wasteful number, since it uses less digits than its factorization.

27772001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8359.

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 27772001 is about 5269.9147051921. The cubic root of 27772001 is about 302.8324364795.

Adding to 27772001 its reverse (10027772), we get a palindrome (37799773).

The spelling of 27772001 in words is "twenty-seven million, seven hundred seventy-two thousand, one".