2157027547 has 4 divisors (see below), whose sum is σ = 2189222056. Its totient is φ = 2124833040.

The previous prime is 2157027539. The next prime is 2157027559. The reversal of 2157027547 is 7457207512.

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

It is a cyclic number.

It is not a de Polignac number, because 2157027547 - 2³ = 2157027539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157027577) 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, 16097154 + ... + 16097287.

It is an arithmetic number, because the mean of its divisors is an integer number (547305514).

Almost surely, 2^2157027547 is an apocalyptic number.

2157027547 is a deficient number, since it is larger than the sum of its proper divisors (32194509).

2157027547 is an equidigital number, since it uses as much as digits as its factorization.

2157027547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32194508.

The product of its (nonzero) digits is 137200, while the sum is 40.

The square root of 2157027547 is about 46443.8106425388. The cubic root of 2157027547 is about 1292.0675829380.

The spelling of 2157027547 in words is "two billion, one hundred fifty-seven million, twenty-seven thousand, five hundred forty-seven".