248005557 has 12 divisors (see below), whose sum is σ = 371498400. Its totient is φ = 165336876.

The previous prime is 248005547. The next prime is 248005559. The reversal of 248005557 is 755500842.

It is a happy number.

248005557 is a `hidden beast` number, since 24 + 80 + 0 + 5 + 557 = 666.

248005557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 248005557 - 2⁶ = 248005493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248005559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510057 + ... + 510542.

It is an arithmetic number, because the mean of its divisors is an integer number (30958200).

Almost surely, 2^248005557 is an apocalyptic number.

248005557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

248005557 is a deficient number, since it is larger than the sum of its proper divisors (123492843).

248005557 is an equidigital number, since it uses as much as digits as its factorization.

248005557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020614 (or 1020602 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 248005557 is about 15748.1921819617. The cubic root of 248005557 is about 628.2808230917.

The spelling of 248005557 in words is "two hundred forty-eight million, five thousand, five hundred fifty-seven".