1553040534251 has 2 divisors, whose sum is σ = 1553040534252. Its totient is φ = 1553040534250.

The previous prime is 1553040534239. The next prime is 1553040534271. The reversal of 1553040534251 is 1524350403551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1553040534251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1553040534271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776520267125 + 776520267126.

It is an arithmetic number, because the mean of its divisors is an integer number (776520267126).

Almost surely, 2^{1553040534251} is an apocalyptic number.

1553040534251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553040534251 is an equidigital number, since it uses as much as digits as its factorization.

1553040534251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 1553040534251 in words is "one trillion, five hundred fifty-three billion, forty million, five hundred thirty-four thousand, two hundred fifty-one".