51135104 has 16 divisors (see below), whose sum is σ = 101870970. Its totient is φ = 25567488.

The previous prime is 51135103. The next prime is 51135169. The reversal of 51135104 is 40153115.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 6512704 = 6680^2 + 2552^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×51135104² = 5229597722181632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51135103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199619 + ... + 199874.

Almost surely, 2^51135104 is an apocalyptic number.

It is an amenable number.

51135104 is a deficient number, since it is larger than the sum of its proper divisors (50735866).

51135104 is an equidigital number, since it uses as much as digits as its factorization.

51135104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399507 (or 399495 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51135104 is about 7150.8813442820. The cubic root of 51135104 is about 371.1701546555.

Adding to 51135104 its reverse (40153115), we get a palindrome (91288219).

The spelling of 51135104 in words is "fifty-one million, one hundred thirty-five thousand, one hundred four".