1001290555 has 4 divisors (see below), whose sum is σ = 1201548672. Its totient is φ = 801032440.

The previous prime is 1001290553. The next prime is 1001290567. The reversal of 1001290555 is 5550921001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1001290555 - 2¹ = 1001290553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001290553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100129051 + ... + 100129060.

It is an arithmetic number, because the mean of its divisors is an integer number (300387168).

Almost surely, 2^1001290555 is an apocalyptic number.

1001290555 is a deficient number, since it is larger than the sum of its proper divisors (200258117).

1001290555 is an equidigital number, since it uses as much as digits as its factorization.

1001290555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200258116.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 1001290555 is about 31643.1754885631. The cubic root of 1001290555 is about 1000.4300000734.

The spelling of 1001290555 in words is "one billion, one million, two hundred ninety thousand, five hundred fifty-five".