1216450053 has 48 divisors (see below), whose sum is σ = 2276426880. Its totient is φ = 607865472.

The previous prime is 1216450051. The next prime is 1216450093. The reversal of 1216450053 is 3500546121.

1216450053 is a `hidden beast` number, since 12 + 1 + 645 + 0 + 0 + 5 + 3 = 666.

It is not a de Polignac number, because 1216450053 - 2¹ = 1216450051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1216449999 and 1216450026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216450051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23526 + ... + 54647.

It is an arithmetic number, because the mean of its divisors is an integer number (47425560).

Almost surely, 2^1216450053 is an apocalyptic number.

1216450053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1216450053 is a deficient number, since it is larger than the sum of its proper divisors (1059976827).

1216450053 is a wasteful number, since it uses less digits than its factorization.

1216450053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78218 (or 78215 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1216450053 is about 34877.6440288045. The cubic root of 1216450053 is about 1067.4923233090.

Adding to 1216450053 its reverse (3500546121), we get a palindrome (4716996174).

The spelling of 1216450053 in words is "one billion, two hundred sixteen million, four hundred fifty thousand, fifty-three".