1356217245 has 48 divisors (see below), whose sum is σ = 2620088640. Its totient is φ = 644931072.

The previous prime is 1356217217. The next prime is 1356217249. The reversal of 1356217245 is 5427126531.

1356217245 is a `hidden beast` number, since 1 + 3 + 5 + 621 + 7 + 24 + 5 = 666.

It is not a de Polignac number, because 1356217245 - 2¹⁰ = 1356216221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356217249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32119 + ... + 61188.

It is an arithmetic number, because the mean of its divisors is an integer number (54585180).

Almost surely, 2^1356217245 is an apocalyptic number.

1356217245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1356217245 is a deficient number, since it is larger than the sum of its proper divisors (1263871395).

1356217245 is a wasteful number, since it uses less digits than its factorization.

1356217245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93354 (or 93351 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 1356217245 is about 36826.8549430982. The cubic root of 1356217245 is about 1106.9034832850.

The spelling of 1356217245 in words is "one billion, three hundred fifty-six million, two hundred seventeen thousand, two hundred forty-five".