248660551 has 4 divisors (see below), whose sum is σ = 248708952. Its totient is φ = 248612152.

The previous prime is 248660549. The next prime is 248660563. The reversal of 248660551 is 155066842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248660551 - 2¹ = 248660549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 248660551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248660051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15436 + ... + 27121.

It is an arithmetic number, because the mean of its divisors is an integer number (62177238).

Almost surely, 2^248660551 is an apocalyptic number.

248660551 is a deficient number, since it is larger than the sum of its proper divisors (48401).

248660551 is an equidigital number, since it uses as much as digits as its factorization.

248660551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48400.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 248660551 is about 15768.9743166764. The cubic root of 248660551 is about 628.8334429924.

The spelling of 248660551 in words is "two hundred forty-eight million, six hundred sixty thousand, five hundred fifty-one".