1353551243 has 4 divisors (see below), whose sum is σ = 1476601368. Its totient is φ = 1230501120.

The previous prime is 1353551239. The next prime is 1353551257. The reversal of 1353551243 is 3421553531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1353551243 - 2² = 1353551239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1353551743) 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, 61525046 + ... + 61525067.

It is an arithmetic number, because the mean of its divisors is an integer number (369150342).

Almost surely, 2^1353551243 is an apocalyptic number.

1353551243 is a deficient number, since it is larger than the sum of its proper divisors (123050125).

1353551243 is a wasteful number, since it uses less digits than its factorization.

1353551243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123050124.

The product of its digits is 27000, while the sum is 32.

The square root of 1353551243 is about 36790.6406984168. The cubic root of 1353551243 is about 1106.1777041160.

The spelling of 1353551243 in words is "one billion, three hundred fifty-three million, five hundred fifty-one thousand, two hundred forty-three".