1553451241 has 4 divisors (see below), whose sum is σ = 1558940752. Its totient is φ = 1547961732.

The previous prime is 1553451197. The next prime is 1553451259. The reversal of 1553451241 is 1421543551.

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 1553451241 - 2⁹ = 1553450729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1553451271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2744331 + ... + 2744896.

It is an arithmetic number, because the mean of its divisors is an integer number (389735188).

Almost surely, 2^1553451241 is an apocalyptic number.

It is an amenable number.

1553451241 is a deficient number, since it is larger than the sum of its proper divisors (5489511).

1553451241 is an equidigital number, since it uses as much as digits as its factorization.

1553451241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489510.

The product of its digits is 12000, while the sum is 31.

The square root of 1553451241 is about 39413.8458032200. The cubic root of 1553451241 is about 1158.1528372739.

Adding to 1553451241 its reverse (1421543551), we get a palindrome (2974994792).

The spelling of 1553451241 in words is "one billion, five hundred fifty-three million, four hundred fifty-one thousand, two hundred forty-one".