612145271 has 2 divisors, whose sum is σ = 612145272. Its totient is φ = 612145270.

The previous prime is 612145267. The next prime is 612145273. The reversal of 612145271 is 172541216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612145271 - 2² = 612145267 is a prime.

Together with 612145273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612145273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306072635 + 306072636.

It is an arithmetic number, because the mean of its divisors is an integer number (306072636).

Almost surely, 2^612145271 is an apocalyptic number.

612145271 is a deficient number, since it is larger than the sum of its proper divisors (1).

612145271 is an equidigital number, since it uses as much as digits as its factorization.

612145271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 612145271 is about 24741.5696955549. The cubic root of 612145271 is about 849.0856469937.

Adding to 612145271 its reverse (172541216), we get a palindrome (784686487).

The spelling of 612145271 in words is "six hundred twelve million, one hundred forty-five thousand, two hundred seventy-one".