1555055201 has 8 divisors (see below), whose sum is σ = 1834535424. Its totient is φ = 1289907360.

The previous prime is 1555055191. The next prime is 1555055221. The reversal of 1555055201 is 1025505551.

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

It is not a de Polignac number, because 1555055201 - 2⁶ = 1555055137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1555055221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3582860 + ... + 3583293.

It is an arithmetic number, because the mean of its divisors is an integer number (229316928).

Almost surely, 2^1555055201 is an apocalyptic number.

It is an amenable number.

1555055201 is a deficient number, since it is larger than the sum of its proper divisors (279480223).

1555055201 is an equidigital number, since it uses as much as digits as its factorization.

1555055201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166191.

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 1555055201 is about 39434.1882254472. The cubic root of 1555055201 is about 1158.5513031326.

The spelling of 1555055201 in words is "one billion, five hundred fifty-five million, fifty-five thousand, two hundred one".