51101711 has 4 divisors (see below), whose sum is σ = 54107712. Its totient is φ = 48095712.

The previous prime is 51101681. The next prime is 51101719. The reversal of 51101711 is 11710115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51101711 - 2⁶ = 51101647 is a prime.

It is a super-2 number, since 2×51101711² = 5222769734255042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 3005983 = 51101711 / (5 + 1 + 1 + 0 + 1 + 7 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51101711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101719) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1502975 + ... + 1503008.

It is an arithmetic number, because the mean of its divisors is an integer number (13526928).

Almost surely, 2^51101711 is an apocalyptic number.

51101711 is a deficient number, since it is larger than the sum of its proper divisors (3006001).

51101711 is a wasteful number, since it uses less digits than its factorization.

51101711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006000.

The product of its (nonzero) digits is 35, while the sum is 17.

The square root of 51101711 is about 7148.5460759514. The cubic root of 51101711 is about 371.0893413916.

Adding to 51101711 its reverse (11710115), we get a palindrome (62811826).

The spelling of 51101711 in words is "fifty-one million, one hundred one thousand, seven hundred eleven".