248405081 has 4 divisors (see below), whose sum is σ = 248437200. Its totient is φ = 248372964.

The previous prime is 248405063. The next prime is 248405123. The reversal of 248405081 is 180504842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 248405081 - 2¹⁴ = 248388697 is a prime.

It is a super-2 number, since 2×248405081² = 123410168533233122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248405881) 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, 3410 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (62109300).

Almost surely, 2^248405081 is an apocalyptic number.

It is an amenable number.

248405081 is a deficient number, since it is larger than the sum of its proper divisors (32119).

248405081 is a wasteful number, since it uses less digits than its factorization.

248405081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32118.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 248405081 is about 15760.8718350223. The cubic root of 248405081 is about 628.6180179532.

The spelling of 248405081 in words is "two hundred forty-eight million, four hundred five thousand, eighty-one".