5451540 has 48 divisors (see below), whose sum is σ = 15626688. Its totient is φ = 1419264.

The previous prime is 5451503. The next prime is 5451547. The reversal of 5451540 is 451545.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5451540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451547) 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, 1524 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (325556).

Almost surely, 2^5451540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5451540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7813344).

5451540 is an abundant number, since it is smaller than the sum of its proper divisors (10175148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5451540 is a wasteful number, since it uses less digits than its factorization.

5451540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 5451540 is about 2334.8533144504. The cubic root of 5451540 is about 175.9974603628.

The spelling of 5451540 in words is "five million, four hundred fifty-one thousand, five hundred forty".