1503456161 has 4 divisors (see below), whose sum is σ = 1503691332. Its totient is φ = 1503220992.

The previous prime is 1503456151. The next prime is 1503456167. The reversal of 1503456161 is 1616543051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1616543051 = 47 ⋅34394533.

It can be written as a sum of positive squares in 2 ways, for example, as 1268784400 + 234671761 = 35620^2 + 15319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1503456161 - 2¹⁰ = 1503455137 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 (1503456167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107720 + ... + 120873.

It is an arithmetic number, because the mean of its divisors is an integer number (375922833).

Almost surely, 2^1503456161 is an apocalyptic number.

It is an amenable number.

1503456161 is a deficient number, since it is larger than the sum of its proper divisors (235171).

1503456161 is an equidigital number, since it uses as much as digits as its factorization.

1503456161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235170.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1503456161 is about 38774.4266366377. The cubic root of 1503456161 is about 1145.5927496671.

The spelling of 1503456161 in words is "one billion, five hundred three million, four hundred fifty-six thousand, one hundred sixty-one".