1563145253 has 8 divisors (see below), whose sum is σ = 1606674048. Its totient is φ = 1519683984.

The previous prime is 1563145249. The next prime is 1563145267. The reversal of 1563145253 is 3525413651.

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

It is a cyclic number.

It is not a de Polignac number, because 1563145253 - 2² = 1563145249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563145273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32000 + ... + 64422.

It is an arithmetic number, because the mean of its divisors is an integer number (200834256).

Almost surely, 2^1563145253 is an apocalyptic number.

It is an amenable number.

1563145253 is a deficient number, since it is larger than the sum of its proper divisors (43528795).

1563145253 is a wasteful number, since it uses less digits than its factorization.

1563145253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33763.

The product of its digits is 54000, while the sum is 35.

The square root of 1563145253 is about 39536.6317862309. The cubic root of 1563145253 is about 1160.5569197067.

The spelling of 1563145253 in words is "one billion, five hundred sixty-three million, one hundred forty-five thousand, two hundred fifty-three".