1254628217 has 2 divisors, whose sum is σ = 1254628218. Its totient is φ = 1254628216.

The previous prime is 1254628213. The next prime is 1254628267. The reversal of 1254628217 is 7128264521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1195707241 + 58920976 = 34579^2 + 7676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254628217 - 2² = 1254628213 is a prime.

It is not a weakly prime, because it can be changed into another prime (1254628213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627314108 + 627314109.

It is an arithmetic number, because the mean of its divisors is an integer number (627314109).

Almost surely, 2^1254628217 is an apocalyptic number.

It is an amenable number.

1254628217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254628217 is an equidigital number, since it uses as much as digits as its factorization.

1254628217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

The square root of 1254628217 is about 35420.7314577212. The cubic root of 1254628217 is about 1078.5451997030.

The spelling of 1254628217 in words is "one billion, two hundred fifty-four million, six hundred twenty-eight thousand, two hundred seventeen".