1555253053 has 2 divisors, whose sum is σ = 1555253054. Its totient is φ = 1555253052.

The previous prime is 1555253027. The next prime is 1555253059. The reversal of 1555253053 is 3503525551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1547084889 + 8168164 = 39333^2 + 2858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555253053 - 2²⁵ = 1521698621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555253059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777626526 + 777626527.

It is an arithmetic number, because the mean of its divisors is an integer number (777626527).

Almost surely, 2^1555253053 is an apocalyptic number.

It is an amenable number.

1555253053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555253053 is an equidigital number, since it uses as much as digits as its factorization.

1555253053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56250, while the sum is 34.

The square root of 1555253053 is about 39436.6967810439. The cubic root of 1555253053 is about 1158.6004357875.

The spelling of 1555253053 in words is "one billion, five hundred fifty-five million, two hundred fifty-three thousand, fifty-three".