51140511 has 16 divisors (see below), whose sum is σ = 76463200. Its totient is φ = 33778944.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140511 is 11504115.

It is a happy number.

It is not a de Polignac number, because 51140511 - 2⁶ = 51140447 is a prime.

It is a super-2 number, since 2×51140511² = 5230703730682242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5746 + ... + 11631.

It is an arithmetic number, because the mean of its divisors is an integer number (4778950).

Almost surely, 2^51140511 is an apocalyptic number.

51140511 is a deficient number, since it is larger than the sum of its proper divisors (25322689).

51140511 is a wasteful number, since it uses less digits than its factorization.

51140511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17495 (or 17489 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 51140511 is about 7151.2593995743. The cubic root of 51140511 is about 371.1832366425.

Adding to 51140511 its reverse (11504115), we get a palindrome (62644626).

The spelling of 51140511 in words is "fifty-one million, one hundred forty thousand, five hundred eleven".