612855251 has 2 divisors, whose sum is σ = 612855252. Its totient is φ = 612855250.

The previous prime is 612855223. The next prime is 612855259. The reversal of 612855251 is 152558216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612855251 - 2¹⁰ = 612854227 is a prime.

It is not a weakly prime, because it can be changed into another prime (612855259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306427625 + 306427626.

It is an arithmetic number, because the mean of its divisors is an integer number (306427626).

Almost surely, 2^612855251 is an apocalyptic number.

612855251 is a deficient number, since it is larger than the sum of its proper divisors (1).

612855251 is an equidigital number, since it uses as much as digits as its factorization.

612855251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 35.

The square root of 612855251 is about 24755.9134551727. The cubic root of 612855251 is about 849.4137831111.

The spelling of 612855251 in words is "six hundred twelve million, eight hundred fifty-five thousand, two hundred fifty-one".