1555242055 has 8 divisors (see below), whose sum is σ = 1964516400. Its totient is φ = 1178709696.

The previous prime is 1555242041. The next prime is 1555242067. The reversal of 1555242055 is 5502425551.

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 1555242055 - 2⁷ = 1555241927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1555242055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8185390 + ... + 8185579.

It is an arithmetic number, because the mean of its divisors is an integer number (245564550).

Almost surely, 2^1555242055 is an apocalyptic number.

1555242055 is a deficient number, since it is larger than the sum of its proper divisors (409274345).

1555242055 is a wasteful number, since it uses less digits than its factorization.

1555242055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16370993.

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 1555242055 is about 39436.5573421413. The cubic root of 1555242055 is about 1158.5977047598.

The spelling of 1555242055 in words is "one billion, five hundred fifty-five million, two hundred forty-two thousand, fifty-five".