1563480755 has 4 divisors (see below), whose sum is σ = 1876176912. Its totient is φ = 1250784600.

The previous prime is 1563480739. The next prime is 1563480767. The reversal of 1563480755 is 5570843651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5570843651 = 751 ⋅7417901.

It is not a de Polignac number, because 1563480755 - 2⁴ = 1563480739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156348071 + ... + 156348080.

It is an arithmetic number, because the mean of its divisors is an integer number (469044228).

Almost surely, 2^1563480755 is an apocalyptic number.

1563480755 is a deficient number, since it is larger than the sum of its proper divisors (312696157).

1563480755 is an equidigital number, since it uses as much as digits as its factorization.

1563480755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312696156.

The product of its (nonzero) digits is 504000, while the sum is 44.

The square root of 1563480755 is about 39540.8744845129. The cubic root of 1563480755 is about 1160.6399449007.

The spelling of 1563480755 in words is "one billion, five hundred sixty-three million, four hundred eighty thousand, seven hundred fifty-five".