1555040341 has 2 divisors, whose sum is σ = 1555040342. Its totient is φ = 1555040340.

The previous prime is 1555040297. The next prime is 1555040359. The reversal of 1555040341 is 1430405551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1397638225 + 157402116 = 37385^2 + 12546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555040341 - 2⁷ = 1555040213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555040381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777520170 + 777520171.

It is an arithmetic number, because the mean of its divisors is an integer number (777520171).

Almost surely, 2^1555040341 is an apocalyptic number.

It is an amenable number.

1555040341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555040341 is an equidigital number, since it uses as much as digits as its factorization.

1555040341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1555040341 is about 39433.9998098088. Note that the first 3 decimals coincide. The cubic root of 1555040341 is about 1158.5476127755.

Adding to 1555040341 its reverse (1430405551), we get a palindrome (2985445892).

The spelling of 1555040341 in words is "one billion, five hundred fifty-five million, forty thousand, three hundred forty-one".