51540214 has 16 divisors (see below), whose sum is σ = 85116240. Its totient is φ = 23211360.

The previous prime is 51540211. The next prime is 51540233. The reversal of 51540214 is 41204515.

51540214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51540211) 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 7 ways as a sum of consecutive naturals, for example, 8349 + ... + 13144.

It is an arithmetic number, because the mean of its divisors is an integer number (5319765).

Almost surely, 2^51540214 is an apocalyptic number.

51540214 is a deficient number, since it is larger than the sum of its proper divisors (33576026).

51540214 is a wasteful number, since it uses less digits than its factorization.

51540214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21615.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51540214 is about 7179.1513426031. The cubic root of 51540214 is about 372.1477570434.

Adding to 51540214 its reverse (41204515), we get a palindrome (92744729).

The spelling of 51540214 in words is "fifty-one million, five hundred forty thousand, two hundred fourteen".