248179921 has 8 divisors (see below), whose sum is σ = 271389888. Its totient is φ = 225078000.

The previous prime is 248179909. The next prime is 248179933. The reversal of 248179921 is 129971842.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (248179909) and next prime (248179933).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 248179921 - 2¹⁵ = 248147153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (248179621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22165 + ... + 31426.

It is an arithmetic number, because the mean of its divisors is an integer number (33923736).

Almost surely, 2^248179921 is an apocalyptic number.

It is an amenable number.

248179921 is a deficient number, since it is larger than the sum of its proper divisors (23209967).

248179921 is a wasteful number, since it uses less digits than its factorization.

248179921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54023.

The product of its digits is 72576, while the sum is 43.

The square root of 248179921 is about 15753.7272097748. The cubic root of 248179921 is about 628.4280293281.

The spelling of 248179921 in words is "two hundred forty-eight million, one hundred seventy-nine thousand, nine hundred twenty-one".