51155325 has 36 divisors (see below), whose sum is σ = 98678580. Its totient is φ = 25182720.

The previous prime is 51155311. The next prime is 51155347. The reversal of 51155325 is 52355115.

51155325 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 6 ways, for example, as 21930489 + 29224836 = 4683^2 + 5406^2 .

It is not a de Polignac number, because 51155325 - 2¹² = 51151229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 5820 + ... + 11669.

Almost surely, 2^51155325 is an apocalyptic number.

It is an amenable number.

51155325 is a deficient number, since it is larger than the sum of its proper divisors (47523255).

51155325 is a wasteful number, since it uses less digits than its factorization.

51155325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17518 (or 17510 counting only the distinct ones).

The product of its digits is 3750, while the sum is 27.

The square root of 51155325 is about 7152.2950861944. The cubic root of 51155325 is about 371.2190737085.

It can be divided in two parts, 5115 and 5325, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 51155325 in words is "fifty-one million, one hundred fifty-five thousand, three hundred twenty-five".