1216006552 has 32 divisors (see below), whose sum is σ = 2340590400. Its totient is φ = 592061184.

The previous prime is 1216006531. The next prime is 1216006553. The reversal of 1216006552 is 2556006121.

1216006552 is a modest number, since divided by 6552 gives 1216 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1216006552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216006553) 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, 32958 + ... + 59314.

It is an arithmetic number, because the mean of its divisors is an integer number (73143450).

Almost surely, 2^1216006552 is an apocalyptic number.

It is an amenable number.

1216006552 is a deficient number, since it is larger than the sum of its proper divisors (1124583848).

1216006552 is a wasteful number, since it uses less digits than its factorization.

1216006552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26515 (or 26511 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1216006552 is about 34871.2854939419. The cubic root of 1216006552 is about 1067.3625765213.

The spelling of 1216006552 in words is "one billion, two hundred sixteen million, six thousand, five hundred fifty-two".