1210056155 has 16 divisors (see below), whose sum is σ = 1810370304. Its totient is φ = 754320480.

The previous prime is 1210056137. The next prime is 1210056161. The reversal of 1210056155 is 5516500121.

1210056155 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1210056155 - 2¹⁶ = 1209990619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1571117 + ... + 1571886.

It is an arithmetic number, because the mean of its divisors is an integer number (113148144).

Almost surely, 2^1210056155 is an apocalyptic number.

1210056155 is a deficient number, since it is larger than the sum of its proper divisors (600314149).

1210056155 is a wasteful number, since it uses less digits than its factorization.

1210056155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143026.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1210056155 is about 34785.8614238601. The cubic root of 1210056155 is about 1065.6187210553.

Adding to 1210056155 its reverse (5516500121), we get a palindrome (6726556276).

The spelling of 1210056155 in words is "one billion, two hundred ten million, fifty-six thousand, one hundred fifty-five".