1553244254251 has 4 divisors (see below), whose sum is σ = 1562222544912. Its totient is φ = 1544265963592.

The previous prime is 1553244254201. The next prime is 1553244254257. The reversal of 1553244254251 is 1524524423551.

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 1553244254251 - 2⁹ = 1553244253739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1553244254198 and 1553244254207.

It is not an unprimeable number, because it can be changed into a prime (1553244254257) 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, 4489145071 + ... + 4489145416.

It is an arithmetic number, because the mean of its divisors is an integer number (390555636228).

Almost surely, 2^{1553244254251} is an apocalyptic number.

1553244254251 is a deficient number, since it is larger than the sum of its proper divisors (8978290661).

1553244254251 is an equidigital number, since it uses as much as digits as its factorization.

1553244254251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8978290660.

The product of its digits is 960000, while the sum is 43.

The spelling of 1553244254251 in words is "one trillion, five hundred fifty-three billion, two hundred forty-four million, two hundred fifty-four thousand, two hundred fifty-one".