1601555053 has 6 divisors (see below), whose sum is σ = 1863033486. Its totient is φ = 1372761432.

The previous prime is 1601555047. The next prime is 1601555107. The reversal of 1601555053 is 3505551061.

It can be written as a sum of positive squares in only one way, i.e., 1555355844 + 46199209 = 39438^2 + 6797^2 .

It is not a de Polignac number, because 1601555053 - 2⁹ = 1601554541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601555453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16342350 + ... + 16342447.

It is an arithmetic number, because the mean of its divisors is an integer number (310505581).

Almost surely, 2^1601555053 is an apocalyptic number.

It is an amenable number.

1601555053 is a deficient number, since it is larger than the sum of its proper divisors (261478433).

1601555053 is an equidigital number, since it uses as much as digits as its factorization.

1601555053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32684811 (or 32684804 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 1601555053 is about 40019.4334417668. The cubic root of 1601555053 is about 1169.9858894736.

The spelling of 1601555053 in words is "one billion, six hundred one million, five hundred fifty-five thousand, fifty-three".