51532245 has 24 divisors (see below), whose sum is σ = 89791416. Its totient is φ = 27339648.

The previous prime is 51532241. The next prime is 51532279. The reversal of 51532245 is 54223515.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23590449 + 27941796 = 4857^2 + 5286^2 .

It is not a de Polignac number, because 51532245 - 2² = 51532241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51532241) 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, 5959 + ... + 11771.

It is an arithmetic number, because the mean of its divisors is an integer number (3741309).

Almost surely, 2^51532245 is an apocalyptic number.

It is an amenable number.

51532245 is a deficient number, since it is larger than the sum of its proper divisors (38259171).

51532245 is a wasteful number, since it uses less digits than its factorization.

51532245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021 (or 6018 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51532245 is about 7178.5963112575. The cubic root of 51532245 is about 372.1285759154.

The spelling of 51532245 in words is "fifty-one million, five hundred thirty-two thousand, two hundred forty-five".