27220957 has 4 divisors (see below), whose sum is σ = 27243520. Its totient is φ = 27198396.

The previous prime is 27220931. The next prime is 27220967. The reversal of 27220957 is 75902272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27220957 - 2⁷ = 27220829 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 (27220967) 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, 9363 + ... + 11920.

It is an arithmetic number, because the mean of its divisors is an integer number (6810880).

Almost surely, 2^27220957 is an apocalyptic number.

It is an amenable number.

27220957 is a deficient number, since it is larger than the sum of its proper divisors (22563).

27220957 is a wasteful number, since it uses less digits than its factorization.

27220957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22562.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 27220957 is about 5217.3706979666. The cubic root of 27220957 is about 300.8161369806.

The spelling of 27220957 in words is "twenty-seven million, two hundred twenty thousand, nine hundred fifty-seven".