1555140053 has 2 divisors, whose sum is σ = 1555140054. Its totient is φ = 1555140052.

The previous prime is 1555140049. The next prime is 1555140061. The reversal of 1555140053 is 3500415551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123456324 + 431683729 = 33518^2 + 20777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555140053 - 2² = 1555140049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1555139998 and 1555140025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555140023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777570026 + 777570027.

It is an arithmetic number, because the mean of its divisors is an integer number (777570027).

Almost surely, 2^1555140053 is an apocalyptic number.

It is an amenable number.

1555140053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555140053 is an equidigital number, since it uses as much as digits as its factorization.

1555140053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1555140053 is about 39435.2640792476. The cubic root of 1555140053 is about 1158.5723749692.

The spelling of 1555140053 in words is "one billion, five hundred fifty-five million, one hundred forty thousand, fifty-three".