1206557055 has 24 divisors (see below), whose sum is σ = 2281490640. Its totient is φ = 584997120.

The previous prime is 1206557039. The next prime is 1206557071. The reversal of 1206557055 is 5507556021.

It is a happy number.

1206557055 is a `hidden beast` number, since 1 + 20 + 65 + 570 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1206557039) and next prime (1206557071).

It is not a de Polignac number, because 1206557055 - 2⁴ = 1206557039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1218250 + ... + 1219239.

It is an arithmetic number, because the mean of its divisors is an integer number (95062110).

Almost surely, 2^1206557055 is an apocalyptic number.

1206557055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1206557055 is a deficient number, since it is larger than the sum of its proper divisors (1074933585).

1206557055 is a wasteful number, since it uses less digits than its factorization.

1206557055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437511 (or 2437508 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 1206557055 is about 34735.5301528565. The cubic root of 1206557055 is about 1064.5905852076.

The spelling of 1206557055 in words is "one billion, two hundred six million, five hundred fifty-seven thousand, fifty-five".