1217283457 has 16 divisors (see below), whose sum is σ = 1335257280. Its totient is φ = 1102848192.

The previous prime is 1217283449. The next prime is 1217283493. The reversal of 1217283457 is 7543827121.

It is a cyclic number.

It is not a de Polignac number, because 1217283457 - 2³ = 1217283449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1217283157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 948138 + ... + 949420.

It is an arithmetic number, because the mean of its divisors is an integer number (83453580).

Almost surely, 2^1217283457 is an apocalyptic number.

It is an amenable number.

1217283457 is a deficient number, since it is larger than the sum of its proper divisors (117973823).

1217283457 is a wasteful number, since it uses less digits than its factorization.

1217283457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592.

The product of its digits is 94080, while the sum is 40.

The square root of 1217283457 is about 34889.5895218044. The cubic root of 1217283457 is about 1067.7360514360.

The spelling of 1217283457 in words is "one billion, two hundred seventeen million, two hundred eighty-three thousand, four hundred fifty-seven".