5378991 has 8 divisors (see below), whose sum is σ = 7227264. Its totient is φ = 3558360.

The previous prime is 5378963. The next prime is 5378993. The reversal of 5378991 is 1998735.

It is a happy number.

5378991 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5378991 - 2⁵ = 5378959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5378993) 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, 6451 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (903408).

Almost surely, 2^5378991 is an apocalyptic number.

5378991 is a deficient number, since it is larger than the sum of its proper divisors (1848273).

5378991 is a wasteful number, since it uses less digits than its factorization.

5378991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13821.

The product of its digits is 68040, while the sum is 42.

The square root of 5378991 is about 2319.2651853551. The cubic root of 5378991 is about 175.2132475231.

The spelling of 5378991 in words is "five million, three hundred seventy-eight thousand, nine hundred ninety-one".