48020521 has 4 divisors (see below), whose sum is σ = 48038544. Its totient is φ = 48002500.

The previous prime is 48020503. The next prime is 48020537. The reversal of 48020521 is 12502084.

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 a de Polignac number, because none of the positive numbers 2^k-48020521 is a prime.

It is a super-2 number, since 2×48020521² = 4611940874222882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 48020492 and 48020501.

It is not an unprimeable number, because it can be changed into a prime (48020221) 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, 4135 + ... + 10636.

It is an arithmetic number, because the mean of its divisors is an integer number (12009636).

Almost surely, 2^48020521 is an apocalyptic number.

It is an amenable number.

48020521 is a deficient number, since it is larger than the sum of its proper divisors (18023).

48020521 is a wasteful number, since it uses less digits than its factorization.

48020521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18022.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 48020521 is about 6929.6840476316. The cubic root of 48020521 is about 363.4759016484.

The spelling of 48020521 in words is "forty-eight million, twenty thousand, five hundred twenty-one".