51436225 has 12 divisors (see below), whose sum is σ = 64031616. Its totient is φ = 40987280.

The previous prime is 51436201. The next prime is 51436241. The reversal of 51436225 is 52263415.

It is not a de Polignac number, because 51436225 - 2²³ = 43047617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51436193 and 51436202.

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, 2664 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (5335968).

Almost surely, 2^51436225 is an apocalyptic number.

It is an amenable number.

51436225 is a deficient number, since it is larger than the sum of its proper divisors (12595391).

51436225 is a wasteful number, since it uses less digits than its factorization.

51436225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8096 (or 8091 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 51436225 is about 7171.9052559275. The cubic root of 51436225 is about 371.8973032312.

The spelling of 51436225 in words is "fifty-one million, four hundred thirty-six thousand, two hundred twenty-five".