5151440 has 40 divisors (see below), whose sum is σ = 13689600. Its totient is φ = 1766016.

The previous prime is 5151437. The next prime is 5151457. The reversal of 5151440 is 441515.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4040 + ... + 5159.

It is an arithmetic number, because the mean of its divisors is an integer number (342240).

Almost surely, 2^5151440 is an apocalyptic number.

It is an amenable number.

5151440 is an abundant number, since it is smaller than the sum of its proper divisors (8538160).

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

5151440 is a wasteful number, since it uses less digits than its factorization.

5151440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9219 (or 9213 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 5151440 is about 2269.6783913145. The cubic root of 5151440 is about 172.7068442221.

Adding to 5151440 its reverse (441515), we get a palindrome (5592955).

The spelling of 5151440 in words is "five million, one hundred fifty-one thousand, four hundred forty".