1215403053 has 8 divisors (see below), whose sum is σ = 1690995648. Its totient is φ = 775039584.

The previous prime is 1215403051. The next prime is 1215403067. The reversal of 1215403053 is 3503045121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1215403053 - 2¹ = 1215403051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215403051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8807200 + ... + 8807337.

It is an arithmetic number, because the mean of its divisors is an integer number (211374456).

Almost surely, 2^1215403053 is an apocalyptic number.

It is an amenable number.

1215403053 is a deficient number, since it is larger than the sum of its proper divisors (475592595).

1215403053 is a wasteful number, since it uses less digits than its factorization.

1215403053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17614563.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1215403053 is about 34862.6311829730. The cubic root of 1215403053 is about 1067.1859714311.

Adding to 1215403053 its reverse (3503045121), we get a palindrome (4718448174).

The spelling of 1215403053 in words is "one billion, two hundred fifteen million, four hundred three thousand, fifty-three".