51005514 has 16 divisors (see below), whose sum is σ = 116584128. Its totient is φ = 14572992.

The previous prime is 51005503. The next prime is 51005533. The reversal of 51005514 is 41550015.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607167 + ... + 607250.

It is an arithmetic number, because the mean of its divisors is an integer number (7286508).

Almost surely, 2^51005514 is an apocalyptic number.

51005514 is an abundant number, since it is smaller than the sum of its proper divisors (65578614).

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

51005514 is a wasteful number, since it uses less digits than its factorization.

51005514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214429.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 51005514 is about 7141.8144753277. The cubic root of 51005514 is about 370.8563413350.

Adding to 51005514 its reverse (41550015), we get a palindrome (92555529).

The spelling of 51005514 in words is "fifty-one million, five thousand, five hundred fourteen".