48040021 has 4 divisors (see below), whose sum is σ = 48136032. Its totient is φ = 47944012.

The previous prime is 48040019. The next prime is 48040033. The reversal of 48040021 is 12004084.

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 48040021 - 2¹ = 48040019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48040081) 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, 47251 + ... + 48256.

It is an arithmetic number, because the mean of its divisors is an integer number (12034008).

Almost surely, 2^48040021 is an apocalyptic number.

It is an amenable number.

48040021 is a deficient number, since it is larger than the sum of its proper divisors (96011).

48040021 is an equidigital number, since it uses as much as digits as its factorization.

48040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96010.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 48040021 is about 6931.0908953786. The cubic root of 48040021 is about 363.5250946514.

The spelling of 48040021 in words is "forty-eight million, forty thousand, twenty-one".