1555748023 has 2 divisors, whose sum is σ = 1555748024. Its totient is φ = 1555748022.

The previous prime is 1555748021. The next prime is 1555748039. The reversal of 1555748023 is 3208475551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1555748023 - 2¹ = 1555748021 is a prime.

It is a super-2 number, since 2×1555748023² = 4840703822136817058, which contains 22 as substring.

Together with 1555748021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555748021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777874011 + 777874012.

It is an arithmetic number, because the mean of its divisors is an integer number (777874012).

Almost surely, 2^1555748023 is an apocalyptic number.

1555748023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555748023 is an equidigital number, since it uses as much as digits as its factorization.

1555748023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 1555748023 is about 39442.9717820552. The cubic root of 1555748023 is about 1158.7233336080.

The spelling of 1555748023 in words is "one billion, five hundred fifty-five million, seven hundred forty-eight thousand, twenty-three".