51144501 has 16 divisors (see below), whose sum is σ = 70146560. Its totient is φ = 33127920.

The previous prime is 51144493. The next prime is 51144503. The reversal of 51144501 is 10544115.

51144501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51144501 - 2³ = 51144493 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 (51144503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26280 + ... + 28158.

It is an arithmetic number, because the mean of its divisors is an integer number (4384160).

Almost surely, 2^51144501 is an apocalyptic number.

It is an amenable number.

51144501 is a deficient number, since it is larger than the sum of its proper divisors (19002059).

51144501 is a wasteful number, since it uses less digits than its factorization.

51144501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 51144501 is about 7151.5383659741. The cubic root of 51144501 is about 371.1928896721.

Adding to 51144501 its reverse (10544115), we get a palindrome (61688616).

The spelling of 51144501 in words is "fifty-one million, one hundred forty-four thousand, five hundred one".