1461555503 has 4 divisors (see below), whose sum is σ = 1461631968. Its totient is φ = 1461479040.

The previous prime is 1461555461. The next prime is 1461555517. The reversal of 1461555503 is 3055551641.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1461555503 - 2⁶ = 1461555439 is a prime.

It is a super-2 number, since 2×1461555503² = 4272288976699166018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461555523) 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, 18575 + ... + 57167.

It is an arithmetic number, because the mean of its divisors is an integer number (365407992).

Almost surely, 2^1461555503 is an apocalyptic number.

1461555503 is a deficient number, since it is larger than the sum of its proper divisors (76465).

1461555503 is an equidigital number, since it uses as much as digits as its factorization.

1461555503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76464.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 1461555503 is about 38230.2956174812. The cubic root of 1461555503 is about 1134.8499359779.

The spelling of 1461555503 in words is "one billion, four hundred sixty-one million, five hundred fifty-five thousand, five hundred three".