1601003551 has 8 divisors (see below), whose sum is σ = 1892812320. Its totient is φ = 1324968288.

The previous prime is 1601003513. The next prime is 1601003557. The reversal of 1601003551 is 1553001061.

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

It is not a de Polignac number, because 1601003551 - 2⁷ = 1601003423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601003557) 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, 3943156 + ... + 3943561.

It is an arithmetic number, because the mean of its divisors is an integer number (236601540).

Almost surely, 2^1601003551 is an apocalyptic number.

1601003551 is a deficient number, since it is larger than the sum of its proper divisors (291808769).

1601003551 is an equidigital number, since it uses as much as digits as its factorization.

1601003551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886753.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1601003551 is about 40012.5424210959. The cubic root of 1601003551 is about 1169.8515775880.

The spelling of 1601003551 in words is "one billion, six hundred one million, three thousand, five hundred fifty-one".