5387721 has 16 divisors (see below), whose sum is σ = 7372800. Its totient is φ = 3498768.

The previous prime is 5387719. The next prime is 5387729. The reversal of 5387721 is 1277835.

It is not a de Polignac number, because 5387721 - 2¹ = 5387719 is a prime.

5387721 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5387729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30010 + ... + 30188.

It is an arithmetic number, because the mean of its divisors is an integer number (460800).

Almost surely, 2^5387721 is an apocalyptic number.

It is an amenable number.

5387721 is a deficient number, since it is larger than the sum of its proper divisors (1985079).

5387721 is a wasteful number, since it uses less digits than its factorization.

5387721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388.

The product of its digits is 11760, while the sum is 33.

The square root of 5387721 is about 2321.1464839600. The cubic root of 5387721 is about 175.3079855441.

The spelling of 5387721 in words is "five million, three hundred eighty-seven thousand, seven hundred twenty-one".