48637921 has 8 divisors (see below), whose sum is σ = 49242600. Its totient is φ = 48037248.

The previous prime is 48637909. The next prime is 48637957. The reversal of 48637921 is 12973684.

It can be written as a sum of positive squares in 4 ways, for example, as 7485696 + 41152225 = 2736^2 + 6415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 48637921 - 2¹⁷ = 48506849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48637961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28525 + ... + 30181.

It is an arithmetic number, because the mean of its divisors is an integer number (6155325).

Almost surely, 2^48637921 is an apocalyptic number.

It is an amenable number.

48637921 is a deficient number, since it is larger than the sum of its proper divisors (604679).

48637921 is a wasteful number, since it uses less digits than its factorization.

48637921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its digits is 72576, while the sum is 40.

The square root of 48637921 is about 6974.0892595378. The cubic root of 48637921 is about 365.0270099484.

The spelling of 48637921 in words is "forty-eight million, six hundred thirty-seven thousand, nine hundred twenty-one".