1172401563 has 8 divisors (see below), whose sum is σ = 1631167488. Its totient is φ = 747618344.

The previous prime is 1172401561. The next prime is 1172401591. The reversal of 1172401563 is 3651042711.

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 1172401563 - 2¹ = 1172401561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1172401563.

It is not an unprimeable number, because it can be changed into a prime (1172401561) 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 7 ways as a sum of consecutive naturals, for example, 8495595 + ... + 8495732.

It is an arithmetic number, because the mean of its divisors is an integer number (203895936).

Almost surely, 2^1172401563 is an apocalyptic number.

1172401563 is a deficient number, since it is larger than the sum of its proper divisors (458765925).

1172401563 is a wasteful number, since it uses less digits than its factorization.

1172401563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991353.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1172401563 is about 34240.3499251979. The cubic root of 1172401563 is about 1054.4487174696.

The spelling of 1172401563 in words is "one billion, one hundred seventy-two million, four hundred one thousand, five hundred sixty-three".