1417156561 has 4 divisors (see below), whose sum is σ = 1423239012. Its totient is φ = 1411074112.

The previous prime is 1417156541. The next prime is 1417156571. The reversal of 1417156561 is 1656517141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656517141 = 7507 ⋅220663.

It can be written as a sum of positive squares in 2 ways, for example, as 375158161 + 1041998400 = 19369^2 + 32280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1417156561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1417156561.

It is not an unprimeable number, because it can be changed into a prime (1417156501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040876 + ... + 3041341.

It is an arithmetic number, because the mean of its divisors is an integer number (355809753).

Almost surely, 2^1417156561 is an apocalyptic number.

It is an amenable number.

1417156561 is a deficient number, since it is larger than the sum of its proper divisors (6082451).

1417156561 is an equidigital number, since it uses as much as digits as its factorization.

1417156561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6082450.

The product of its digits is 25200, while the sum is 37.

The square root of 1417156561 is about 37645.1399386428. The cubic root of 1417156561 is about 1123.2401286793.

The spelling of 1417156561 in words is "one billion, four hundred seventeen million, one hundred fifty-six thousand, five hundred sixty-one".