1553050243 has 4 divisors (see below), whose sum is σ = 1554017080. Its totient is φ = 1552083408.

The previous prime is 1553050241. The next prime is 1553050271. The reversal of 1553050243 is 3420503551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3420503551 = 1733 ⋅1973747.

It is a cyclic number.

It is not a de Polignac number, because 1553050243 - 2¹ = 1553050241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553050241) 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, 481005 + ... + 484222.

It is an arithmetic number, because the mean of its divisors is an integer number (388504270).

Almost surely, 2^1553050243 is an apocalyptic number.

1553050243 is a deficient number, since it is larger than the sum of its proper divisors (966837).

1553050243 is an equidigital number, since it uses as much as digits as its factorization.

1553050243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966836.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 1553050243 is about 39408.7584554500. The cubic root of 1553050243 is about 1158.0531759681.

Adding to 1553050243 its reverse (3420503551), we get a palindrome (4973553794).

The spelling of 1553050243 in words is "one billion, five hundred fifty-three million, fifty thousand, two hundred forty-three".