1282551797 has 2 divisors, whose sum is σ = 1282551798. Its totient is φ = 1282551796.

The previous prime is 1282551769. The next prime is 1282551799. The reversal of 1282551797 is 7971552821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 807355396 + 475196401 = 28414^2 + 21799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282551797 - 2⁶ = 1282551733 is a prime.

It is a super-2 number, since 2×1282551797² = 3289878223975858418, which contains 22 as substring.

Together with 1282551799, 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 (1282551799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641275898 + 641275899.

It is an arithmetic number, because the mean of its divisors is an integer number (641275899).

Almost surely, 2^1282551797 is an apocalyptic number.

It is an amenable number.

1282551797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282551797 is an equidigital number, since it uses as much as digits as its factorization.

1282551797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 47.

The square root of 1282551797 is about 35812.7323308345. The cubic root of 1282551797 is about 1086.4880929772.

The spelling of 1282551797 in words is "one billion, two hundred eighty-two million, five hundred fifty-one thousand, seven hundred ninety-seven".