1548428555 has 4 divisors (see below), whose sum is σ = 1858114272. Its totient is φ = 1238742840.

The previous prime is 1548428551. The next prime is 1548428573. The reversal of 1548428555 is 5558248451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5558248451 = 7 ⋅794035493.

It is not a de Polignac number, because 1548428555 - 2² = 1548428551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1548428551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154842851 + ... + 154842860.

It is an arithmetic number, because the mean of its divisors is an integer number (464528568).

Almost surely, 2^1548428555 is an apocalyptic number.

1548428555 is a deficient number, since it is larger than the sum of its proper divisors (309685717).

1548428555 is an equidigital number, since it uses as much as digits as its factorization.

1548428555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309685716.

The product of its digits is 1280000, while the sum is 47.

The square root of 1548428555 is about 39350.0769376630. The cubic root of 1548428555 is about 1156.9032929317.

The spelling of 1548428555 in words is "one billion, five hundred forty-eight million, four hundred twenty-eight thousand, five hundred fifty-five".