48517921 has 4 divisors (see below), whose sum is σ = 49201344. Its totient is φ = 47834500.

The previous prime is 48517919. The next prime is 48517927. The reversal of 48517921 is 12971584.

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.

It is a cyclic number.

It is not a de Polignac number, because 48517921 - 2¹ = 48517919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48517927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341605 + ... + 341746.

It is an arithmetic number, because the mean of its divisors is an integer number (12300336).

Almost surely, 2^48517921 is an apocalyptic number.

It is an amenable number.

48517921 is a deficient number, since it is larger than the sum of its proper divisors (683423).

48517921 is an equidigital number, since it uses as much as digits as its factorization.

48517921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683422.

The product of its digits is 20160, while the sum is 37.

The square root of 48517921 is about 6965.4806725739. The cubic root of 48517921 is about 364.7265632072.

The spelling of 48517921 in words is "forty-eight million, five hundred seventeen thousand, nine hundred twenty-one".