2538557761 has 16 divisors (see below), whose sum is σ = 2655260608. Its totient is φ = 2424945600.

The previous prime is 2538557731. The next prime is 2538557779. The reversal of 2538557761 is 1677558352.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2538557761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2538557701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472090 + ... + 477436.

It is an arithmetic number, because the mean of its divisors is an integer number (165953788).

Almost surely, 2^2538557761 is an apocalyptic number.

It is an amenable number.

2538557761 is a deficient number, since it is larger than the sum of its proper divisors (116702847).

2538557761 is a wasteful number, since it uses less digits than its factorization.

2538557761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632.

The product of its digits is 1764000, while the sum is 49.

The square root of 2538557761 is about 50384.1022645040. The cubic root of 2538557761 is about 1364.1506988937.

The spelling of 2538557761 in words is "two billion, five hundred thirty-eight million, five hundred fifty-seven thousand, seven hundred sixty-one".