10861155 has 32 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 5654880.

The previous prime is 10861139. The next prime is 10861163. The reversal of 10861155 is 55116801.

It is not a de Polignac number, because 10861155 - 2⁴ = 10861139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4870 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (617760).

Almost surely, 2^10861155 is an apocalyptic number.

10861155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10861155 is a deficient number, since it is larger than the sum of its proper divisors (8907165).

10861155 is a wasteful number, since it uses less digits than its factorization.

10861155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 10861155 is about 3295.6266475437. The cubic root of 10861155 is about 221.4583214574.

Adding to 10861155 its reverse (55116801), we get a palindrome (65977956).

The spelling of 10861155 in words is "ten million, eight hundred sixty-one thousand, one hundred fifty-five".