48787921 has 16 divisors (see below), whose sum is σ = 60218368. Its totient is φ = 38491200.

The previous prime is 48787919. The next prime is 48787967. The reversal of 48787921 is 12978784.

48787921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 48787921 - 2¹ = 48787919 is a prime.

It is a super-2 number, since 2×48787921² = 4760522471004482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48787901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48736 + ... + 49726.

It is an arithmetic number, because the mean of its divisors is an integer number (3763648).

Almost surely, 2^48787921 is an apocalyptic number.

It is an amenable number.

48787921 is a deficient number, since it is larger than the sum of its proper divisors (11430447).

48787921 is a wasteful number, since it uses less digits than its factorization.

48787921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552.

The product of its digits is 225792, while the sum is 46.

The square root of 48787921 is about 6984.8350732140. The cubic root of 48787921 is about 365.4018742463.

The spelling of 48787921 in words is "forty-eight million, seven hundred eighty-seven thousand, nine hundred twenty-one".