1201715056 has 20 divisors (see below), whose sum is σ = 2338497400. Its totient is φ = 598231872.

The previous prime is 1201715051. The next prime is 1201715089. The reversal of 1201715056 is 6505171021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201715051) 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, 160326 + ... + 167653.

It is an arithmetic number, because the mean of its divisors is an integer number (116924870).

Almost surely, 2^1201715056 is an apocalyptic number.

1201715056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1201715056 is a deficient number, since it is larger than the sum of its proper divisors (1136782344).

1201715056 is a wasteful number, since it uses less digits than its factorization.

1201715056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328216 (or 328210 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1201715056 is about 34665.7620138372. The cubic root of 1201715056 is about 1063.1645834570.

Adding to 1201715056 its reverse (6505171021), we get a palindrome (7706886077).

The spelling of 1201715056 in words is "one billion, two hundred one million, seven hundred fifteen thousand, fifty-six".