1354005581 has 2 divisors, whose sum is σ = 1354005582. Its totient is φ = 1354005580.

The previous prime is 1354005577. The next prime is 1354005599. The reversal of 1354005581 is 1855004531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1337072356 + 16933225 = 36566^2 + 4115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354005581 - 2² = 1354005577 is a prime.

It is a super-4 number, since 4×1354005581⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1354005551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677002790 + 677002791.

It is an arithmetic number, because the mean of its divisors is an integer number (677002791).

Almost surely, 2^1354005581 is an apocalyptic number.

It is an amenable number.

1354005581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354005581 is an equidigital number, since it uses as much as digits as its factorization.

1354005581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 1354005581 is about 36796.8148213945. The cubic root of 1354005581 is about 1106.3014581658.

The spelling of 1354005581 in words is "one billion, three hundred fifty-four million, five thousand, five hundred eighty-one".