1355487557 has 2 divisors, whose sum is σ = 1355487558. Its totient is φ = 1355487556.

The previous prime is 1355487547. The next prime is 1355487559. The reversal of 1355487557 is 7557845531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812877121 + 542610436 = 28511^2 + 23294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355487557 - 2³⁰ = 281745733 is a prime.

Together with 1355487559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355487559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677743778 + 677743779.

It is an arithmetic number, because the mean of its divisors is an integer number (677743779).

Almost surely, 2^1355487557 is an apocalyptic number.

It is an amenable number.

1355487557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355487557 is an equidigital number, since it uses as much as digits as its factorization.

1355487557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940000, while the sum is 50.

The square root of 1355487557 is about 36816.9466007164. The cubic root of 1355487557 is about 1106.7049312486.

The spelling of 1355487557 in words is "one billion, three hundred fifty-five million, four hundred eighty-seven thousand, five hundred fifty-seven".