2506747553 has 4 divisors (see below), whose sum is σ = 2509512240. Its totient is φ = 2503982868.

The previous prime is 2506747493. The next prime is 2506747571. The reversal of 2506747553 is 3557476052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2506747553 - 2¹² = 2506743457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506747853) 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, 1380983 + ... + 1382796.

It is an arithmetic number, because the mean of its divisors is an integer number (627378060).

Almost surely, 2^2506747553 is an apocalyptic number.

It is an amenable number.

2506747553 is a deficient number, since it is larger than the sum of its proper divisors (2764687).

2506747553 is an equidigital number, since it uses as much as digits as its factorization.

2506747553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764686.

The product of its (nonzero) digits is 882000, while the sum is 44.

The square root of 2506747553 is about 50067.4300618676. The cubic root of 2506747553 is about 1358.4287565150.

The spelling of 2506747553 in words is "two billion, five hundred six million, seven hundred forty-seven thousand, five hundred fifty-three".