1081217355 has 32 divisors (see below), whose sum is σ = 1774882368. Its totient is φ = 561715200.

The previous prime is 1081217351. The next prime is 1081217359. The reversal of 1081217355 is 5537121801.

It is an interprime number because it is at equal distance from previous prime (1081217351) and next prime (1081217359).

It is not a de Polignac number, because 1081217355 - 2² = 1081217351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081217351) 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 31 ways as a sum of consecutive naturals, for example, 651687 + ... + 653343.

It is an arithmetic number, because the mean of its divisors is an integer number (55465074).

Almost surely, 2^1081217355 is an apocalyptic number.

1081217355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1081217355 is a deficient number, since it is larger than the sum of its proper divisors (693665013).

1081217355 is a wasteful number, since it uses less digits than its factorization.

1081217355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 1081217355 is about 32881.8697004900. The cubic root of 1081217355 is about 1026.3709135851.

The spelling of 1081217355 in words is "one billion, eighty-one million, two hundred seventeen thousand, three hundred fifty-five".