2503285861 has 4 divisors (see below), whose sum is σ = 2503445292. Its totient is φ = 2503126432.

The previous prime is 2503285843. The next prime is 2503285871. The reversal of 2503285861 is 1685823052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 285441025 + 2217844836 = 16895^2 + 47094^2 .

It is a cyclic number.

It is not a de Polignac number, because 2503285861 - 2⁹ = 2503285349 is a prime.

It is a super-2 number, since 2×2503285861² = 12532880203765022642, 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 (2503285871) 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, 53230 + ... + 88543.

It is an arithmetic number, because the mean of its divisors is an integer number (625861323).

Almost surely, 2^2503285861 is an apocalyptic number.

It is an amenable number.

2503285861 is a deficient number, since it is larger than the sum of its proper divisors (159431).

2503285861 is a wasteful number, since it uses less digits than its factorization.

2503285861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159430.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 2503285861 is about 50032.8478202071. The cubic root of 2503285861 is about 1357.8031612442.

The spelling of 2503285861 in words is "two billion, five hundred three million, two hundred eighty-five thousand, eight hundred sixty-one".