51170242 has 16 divisors (see below), whose sum is σ = 77824152. Its totient is φ = 25231360.

The previous prime is 51170233. The next prime is 51170257. The reversal of 51170242 is 24207115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 36493681 + 14676561 = 6041^2 + 3831^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57642 + ... + 58522.

Almost surely, 2^51170242 is an apocalyptic number.

51170242 is a deficient number, since it is larger than the sum of its proper divisors (26653910).

51170242 is a wasteful number, since it uses less digits than its factorization.

51170242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 51170242 is about 7153.3378223037. The cubic root of 51170242 is about 371.2551529552.

Adding to 51170242 its reverse (24207115), we get a palindrome (75377357).

The spelling of 51170242 in words is "fifty-one million, one hundred seventy thousand, two hundred forty-two".