51026225 has 12 divisors (see below), whose sum is σ = 65455260. Its totient is φ = 39412800.

The previous prime is 51026201. The next prime is 51026237. The reversal of 51026225 is 52262015.

It can be written as a sum of positive squares in 6 ways, for example, as 2598544 + 48427681 = 1612^2 + 6959^2 .

It is not a de Polignac number, because 51026225 - 2¹² = 51022129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51026225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34466 + ... + 35915.

It is an arithmetic number, because the mean of its divisors is an integer number (5454605).

Almost surely, 2^51026225 is an apocalyptic number.

It is an amenable number.

51026225 is a deficient number, since it is larger than the sum of its proper divisors (14429035).

51026225 is a wasteful number, since it uses less digits than its factorization.

51026225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70420 (or 70415 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 51026225 is about 7143.2643098236. The cubic root of 51026225 is about 370.9065304597.

The spelling of 51026225 in words is "fifty-one million, twenty-six thousand, two hundred twenty-five".