2506747555 has 8 divisors (see below), whose sum is σ = 3239489232. Its totient is φ = 1851136608.

The previous prime is 2506747493. The next prime is 2506747571. The reversal of 2506747555 is 5557476052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2506747555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19282609 + ... + 19282738.

It is an arithmetic number, because the mean of its divisors is an integer number (404936154).

Almost surely, 2^2506747555 is an apocalyptic number.

2506747555 is a deficient number, since it is larger than the sum of its proper divisors (732741677).

2506747555 is a wasteful number, since it uses less digits than its factorization.

2506747555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38565365.

The product of its (nonzero) digits is 1470000, while the sum is 46.

The square root of 2506747555 is about 50067.4300818406. The cubic root of 2506747555 is about 1358.4287568762.

The spelling of 2506747555 in words is "two billion, five hundred six million, seven hundred forty-seven thousand, five hundred fifty-five".