51226225 has 12 divisors (see below), whose sum is σ = 63638784. Its totient is φ = 40904720.

The previous prime is 51226213. The next prime is 51226271. The reversal of 51226225 is 52262215.

It is a happy number.

51226225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51226225 - 2²³ = 42837617 is a prime.

It is a super-2 number, since 2×51226225² = 5248252255501250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51226225.

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 11 ways as a sum of consecutive naturals, for example, 14592 + ... + 17758.

It is an arithmetic number, because the mean of its divisors is an integer number (5303232).

Almost surely, 2^51226225 is an apocalyptic number.

It is an amenable number.

51226225 is a deficient number, since it is larger than the sum of its proper divisors (12412559).

51226225 is a wasteful number, since it uses less digits than its factorization.

51226225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824 (or 3819 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 51226225 is about 7157.2498209857. The cubic root of 51226225 is about 371.3904946526.

The spelling of 51226225 in words is "fifty-one million, two hundred twenty-six thousand, two hundred twenty-five".