1117601561 has 8 divisors (see below), whose sum is σ = 1129833600. Its totient is φ = 1105429680.

The previous prime is 1117601549. The next prime is 1117601593. The reversal of 1117601561 is 1651067111.

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 1117601561 - 2²² = 1113407257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1117661561) 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, 22835 + ... + 52503.

It is an arithmetic number, because the mean of its divisors is an integer number (141229200).

Almost surely, 2^1117601561 is an apocalyptic number.

It is an amenable number.

1117601561 is a deficient number, since it is larger than the sum of its proper divisors (12232039).

1117601561 is a wasteful number, since it uses less digits than its factorization.

1117601561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30079.

The product of its (nonzero) digits is 1260, while the sum is 29.

The square root of 1117601561 is about 33430.5483203611. The cubic root of 1117601561 is about 1037.7569881800.

Adding to 1117601561 its reverse (1651067111), we get a palindrome (2768668672).

The spelling of 1117601561 in words is "one billion, one hundred seventeen million, six hundred one thousand, five hundred sixty-one".