51203925 has 36 divisors (see below), whose sum is σ = 92778660. Its totient is φ = 26991360.

The previous prime is 51203921. The next prime is 51203939. The reversal of 51203925 is 52930215.

It can be written as a sum of positive squares in 6 ways, for example, as 5803281 + 45400644 = 2409^2 + 6738^2 .

It is not a de Polignac number, because 51203925 - 2² = 51203921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51203921) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18747 + ... + 21303.

It is an arithmetic number, because the mean of its divisors is an integer number (2577185).

Almost surely, 2^51203925 is an apocalyptic number.

It is an amenable number.

51203925 is a deficient number, since it is larger than the sum of its proper divisors (41574735).

51203925 is a wasteful number, since it uses less digits than its factorization.

51203925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 51203925 is about 7155.6917904560. The cubic root of 51203925 is about 371.3365951112.

It can be divided in two parts, 5120 and 3925, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 51203925 in words is "fifty-one million, two hundred three thousand, nine hundred twenty-five".