51055925 has 6 divisors (see below), whose sum is σ = 63309378. Its totient is φ = 40844720.

The previous prime is 51055919. The next prime is 51055957. The reversal of 51055925 is 52955015.

It can be written as a sum of positive squares in 3 ways, for example, as 17901361 + 33154564 = 4231^2 + 5758^2 .

It is not a de Polignac number, because 51055925 - 2¹⁰ = 51054901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51055891 and 51055900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1021094 + ... + 1021143.

It is an arithmetic number, because the mean of its divisors is an integer number (10551563).

Almost surely, 2^51055925 is an apocalyptic number.

It is an amenable number.

51055925 is a deficient number, since it is larger than the sum of its proper divisors (12253453).

51055925 is a wasteful number, since it uses less digits than its factorization.

51055925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042247 (or 2042242 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 51055925 is about 7145.3428889032. The cubic root of 51055925 is about 370.9784790010.

It can be divided in two parts, 5 and 1055925, that multiplied together give a triangular number (5279625 = T₃₂₄₉).

The spelling of 51055925 in words is "fifty-one million, fifty-five thousand, nine hundred twenty-five".