172115012 has 6 divisors (see below), whose sum is σ = 301201278. Its totient is φ = 86057504.

The previous prime is 172114993. The next prime is 172115023. The reversal of 172115012 is 210511271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 27730756 = 12016^2 + 5266^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21514373 + ... + 21514380.

It is an arithmetic number, because the mean of its divisors is an integer number (50200213).

Almost surely, 2^172115012 is an apocalyptic number.

It is an amenable number.

172115012 is a deficient number, since it is larger than the sum of its proper divisors (129086266).

172115012 is a wasteful number, since it uses less digits than its factorization.

172115012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43028757 (or 43028755 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 172115012 is about 13119.2611072423. The cubic root of 172115012 is about 556.2537056185.

Adding to 172115012 its reverse (210511271), we get a palindrome (382626283).

The spelling of 172115012 in words is "one hundred seventy-two million, one hundred fifteen thousand, twelve".