51766225 has 24 divisors (see below), whose sum is σ = 73709568. Its totient is φ = 35328000.

The previous prime is 51766199. The next prime is 51766229. The reversal of 51766225 is 52266715.

It is not a de Polignac number, because 51766225 - 2⁹ = 51765713 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51766229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44400 + ... + 45550.

It is an arithmetic number, because the mean of its divisors is an integer number (3071232).

Almost surely, 2^51766225 is an apocalyptic number.

It is an amenable number.

51766225 is a deficient number, since it is larger than the sum of its proper divisors (21943343).

51766225 is a wasteful number, since it uses less digits than its factorization.

51766225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1420 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 51766225 is about 7194.8749120468. The cubic root of 51766225 is about 372.6909370506.

The spelling of 51766225 in words is "fifty-one million, seven hundred sixty-six thousand, two hundred twenty-five".