7145155427 has 4 divisors (see below), whose sum is σ = 7156927296. Its totient is φ = 7133383560.

The previous prime is 7145155421. The next prime is 7145155441. The reversal of 7145155427 is 7245515417.

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 7145155427 - 2³⁰ = 6071413603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145155421) 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, 5885024 + ... + 5886237.

It is an arithmetic number, because the mean of its divisors is an integer number (1789231824).

Almost surely, 2^7145155427 is an apocalyptic number.

7145155427 is a deficient number, since it is larger than the sum of its proper divisors (11771869).

7145155427 is a wasteful number, since it uses less digits than its factorization.

7145155427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11771868.

The product of its digits is 196000, while the sum is 41.

The square root of 7145155427 is about 84529.0212116525. The cubic root of 7145155427 is about 1926.0633178230.

The spelling of 7145155427 in words is "seven billion, one hundred forty-five million, one hundred fifty-five thousand, four hundred twenty-seven".