1210553155 has 8 divisors (see below), whose sum is σ = 1660187232. Its totient is φ = 830093568.

The previous prime is 1210553143. The next prime is 1210553191. The reversal of 1210553155 is 5513550121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210553155 - 2¹⁵ = 1210520387 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 17293582 + ... + 17293651.

It is an arithmetic number, because the mean of its divisors is an integer number (207523404).

Almost surely, 2^1210553155 is an apocalyptic number.

1210553155 is a deficient number, since it is larger than the sum of its proper divisors (449634077).

1210553155 is an equidigital number, since it uses as much as digits as its factorization.

1210553155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34587245.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1210553155 is about 34793.0043974360. The cubic root of 1210553155 is about 1065.7645930769.

The spelling of 1210553155 in words is "one billion, two hundred ten million, five hundred fifty-three thousand, one hundred fifty-five".