1557992083097 has 2 divisors, whose sum is σ = 1557992083098. Its totient is φ = 1557992083096.

The previous prime is 1557992083079. The next prime is 1557992083163. The reversal of 1557992083097 is 7903802997551.

It is a happy number.

Together with previous prime (1557992083079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410348631561 + 147643451536 = 1187581^2 + 384244^2 .

It is an emirp because it is prime and its reverse (7903802997551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1557992083097 - 2¹⁸ = 1557991820953 is a prime.

It is a super-2 number, since 2×1557992083097² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1557992073097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 778996041548 + 778996041549.

It is an arithmetic number, because the mean of its divisors is an integer number (778996041549).

Almost surely, 2^{1557992083097} is an apocalyptic number.

It is an amenable number.

1557992083097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1557992083097 is an equidigital number, since it uses as much as digits as its factorization.

1557992083097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42865200, while the sum is 65.

The spelling of 1557992083097 in words is "one trillion, five hundred fifty-seven billion, nine hundred ninety-two million, eighty-three thousand, ninety-seven".