1241002553 has 4 divisors (see below), whose sum is σ = 1418288640. Its totient is φ = 1063716468.

The previous prime is 1241002549. The next prime is 1241002589. The reversal of 1241002553 is 3552001421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1241002553 - 2² = 1241002549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241002753) 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, 88643033 + ... + 88643046.

It is an arithmetic number, because the mean of its divisors is an integer number (354572160).

Almost surely, 2^1241002553 is an apocalyptic number.

It is an amenable number.

1241002553 is a deficient number, since it is larger than the sum of its proper divisors (177286087).

1241002553 is an equidigital number, since it uses as much as digits as its factorization.

1241002553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177286086.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1241002553 is about 35227.8661431543. The cubic root of 1241002553 is about 1074.6265305876.

Adding to 1241002553 its reverse (3552001421), we get a palindrome (4793003974).

The spelling of 1241002553 in words is "one billion, two hundred forty-one million, two thousand, five hundred fifty-three".