48638621 has 4 divisors (see below), whose sum is σ = 49323744. Its totient is φ = 47953500.

The previous prime is 48638617. The next prime is 48638627. The reversal of 48638621 is 12683684.

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.

It is a cyclic number.

It is not a de Polignac number, because 48638621 - 2² = 48638617 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 (48638627) 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, 342455 + ... + 342596.

It is an arithmetic number, because the mean of its divisors is an integer number (12330936).

Almost surely, 2^48638621 is an apocalyptic number.

It is an amenable number.

48638621 is a deficient number, since it is larger than the sum of its proper divisors (685123).

48638621 is an equidigital number, since it uses as much as digits as its factorization.

48638621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685122.

The product of its digits is 55296, while the sum is 38.

The square root of 48638621 is about 6974.1394451215. The cubic root of 48638621 is about 365.0287611039.

The spelling of 48638621 in words is "forty-eight million, six hundred thirty-eight thousand, six hundred twenty-one".