248155487 has 18 divisors (see below), whose sum is σ = 265984152. Its totient is φ = 231492976.

The previous prime is 248155483. The next prime is 248155507. The reversal of 248155487 is 784551842.

It is not a de Polignac number, because 248155487 - 2² = 248155483 is a prime.

It is a super-2 number, since 2×248155487² = 123162291456414338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248155483) 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 in 17 ways as a sum of consecutive naturals, for example, 1485878 + ... + 1486044.

Almost surely, 2^248155487 is an apocalyptic number.

248155487 is a deficient number, since it is larger than the sum of its proper divisors (17828665).

248155487 is an equidigital number, since it uses as much as digits as its factorization.

248155487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 243 counting only the distinct ones).

The product of its digits is 358400, while the sum is 44.

The square root of 248155487 is about 15752.9516916672. The cubic root of 248155487 is about 628.4074051584.

The spelling of 248155487 in words is "two hundred forty-eight million, one hundred fifty-five thousand, four hundred eighty-seven".