51732225 has 36 divisors (see below), whose sum is σ = 94830736. Its totient is φ = 26943840.

The previous prime is 51732223. The next prime is 51732227. The reversal of 51732225 is 52223715.

It is an interprime number because it is at equal distance from previous prime (51732223) and next prime (51732227).

It is not a de Polignac number, because 51732225 - 2¹ = 51732223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51732223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7002 + ... + 12348.

Almost surely, 2^51732225 is an apocalyptic number.

It is an amenable number.

51732225 is a deficient number, since it is larger than the sum of its proper divisors (43098511).

51732225 is a wasteful number, since it uses less digits than its factorization.

51732225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406 (or 5398 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 51732225 is about 7192.5117309602. The cubic root of 51732225 is about 372.6093248470.

The spelling of 51732225 in words is "fifty-one million, seven hundred thirty-two thousand, two hundred twenty-five".