51100425 has 18 divisors (see below), whose sum is σ = 91526942. Its totient is φ = 27253440.

The previous prime is 51100409. The next prime is 51100429. The reversal of 51100425 is 52400115.

51100425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5294601 + 45805824 = 2301^2 + 6768^2 .

It is not a de Polignac number, because 51100425 - 2⁴ = 51100409 is a prime.

It is a super-2 number, since 2×51100425² = 5222506870361250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51100398 and 51100407.

It is not an unprimeable number, because it can be changed into a prime (51100429) 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 17 ways as a sum of consecutive naturals, for example, 113332 + ... + 113781.

Almost surely, 2^51100425 is an apocalyptic number.

It is an amenable number.

51100425 is a deficient number, since it is larger than the sum of its proper divisors (40426517).

51100425 is a wasteful number, since it uses less digits than its factorization.

51100425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227129 (or 227121 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 51100425 is about 7148.4561270249. The cubic root of 51100425 is about 371.0862284828.

The spelling of 51100425 in words is "fifty-one million, one hundred thousand, four hundred twenty-five".