5451391 has 16 divisors (see below), whose sum is σ = 6428160. Its totient is φ = 4570720.

The previous prime is 5451371. The next prime is 5451431. The reversal of 5451391 is 1931545.

5451391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5451391 - 2⁷ = 5451263 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 (5451301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6966 + ... + 7708.

It is an arithmetic number, because the mean of its divisors is an integer number (401760).

Almost surely, 2^5451391 is an apocalyptic number.

5451391 is a deficient number, since it is larger than the sum of its proper divisors (976769).

5451391 is a wasteful number, since it uses less digits than its factorization.

5451391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806.

The product of its digits is 2700, while the sum is 28.

The square root of 5451391 is about 2334.8214064463. The cubic root of 5451391 is about 175.9958569100.

It can be divided in two parts, 545 and 1391, that added together give a square (1936 = 44²).

The spelling of 5451391 in words is "five million, four hundred fifty-one thousand, three hundred ninety-one".