1550000555 has 16 divisors (see below), whose sum is σ = 1936422720. Its totient is φ = 1189598592.

The previous prime is 1550000549. The next prime is 1550000561. The reversal of 1550000555 is 5550000551.

It is an interprime number because it is at equal distance from previous prime (1550000549) and next prime (1550000561).

It is a cyclic number.

It is not a de Polignac number, because 1550000555 - 2⁸ = 1550000299 is a prime.

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, 11279 + ... + 56808.

It is an arithmetic number, because the mean of its divisors is an integer number (121026420).

Almost surely, 2^1550000555 is an apocalyptic number.

1550000555 is a deficient number, since it is larger than the sum of its proper divisors (386422165).

1550000555 is a wasteful number, since it uses less digits than its factorization.

1550000555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68278.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 1550000555 is about 39370.0464185655. The cubic root of 1550000555 is about 1157.2946653916.

The spelling of 1550000555 in words is "one billion, five hundred fifty million, five hundred fifty-five", and thus it is an aban number.