51827225 has 6 divisors (see below), whose sum is σ = 64265790. Its totient is φ = 41461760.

The previous prime is 51827221. The next prime is 51827249. The reversal of 51827225 is 52272815.

51827225 = 794² + 795² + ... + 868².

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13980121 + 37847104 = 3739^2 + 6152^2 .

It is not a de Polignac number, because 51827225 - 2² = 51827221 is a prime.

It is a super-3 number, since 3×51827225³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51827191 and 51827200.

It is not an unprimeable number, because it can be changed into a prime (51827221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1036520 + ... + 1036569.

It is an arithmetic number, because the mean of its divisors is an integer number (10710965).

Almost surely, 2^51827225 is an apocalyptic number.

It is an amenable number.

51827225 is a deficient number, since it is larger than the sum of its proper divisors (12438565).

51827225 is a wasteful number, since it uses less digits than its factorization.

51827225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073099 (or 2073094 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 51827225 is about 7199.1127925599. The cubic root of 51827225 is about 372.8372694209.

The spelling of 51827225 in words is "fifty-one million, eight hundred twenty-seven thousand, two hundred twenty-five".