1253552563 has 8 divisors (see below), whose sum is σ = 1294110368. Its totient is φ = 1213346304.

The previous prime is 1253552561. The next prime is 1253552621. The reversal of 1253552563 is 3652553521.

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 1253552563 - 2¹ = 1253552561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253552561) 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, 80631 + ... + 94912.

It is an arithmetic number, because the mean of its divisors is an integer number (161763796).

Almost surely, 2^1253552563 is an apocalyptic number.

1253552563 is a deficient number, since it is larger than the sum of its proper divisors (40557805).

1253552563 is a wasteful number, since it uses less digits than its factorization.

1253552563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175773.

The product of its digits is 135000, while the sum is 37.

The square root of 1253552563 is about 35405.5442409801. The cubic root of 1253552563 is about 1078.2368817622.

The spelling of 1253552563 in words is "one billion, two hundred fifty-three million, five hundred fifty-two thousand, five hundred sixty-three".