51360243 has 8 divisors (see below), whose sum is σ = 74705856. Its totient is φ = 31127400.

The previous prime is 51360241. The next prime is 51360251. The reversal of 51360243 is 34206315.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51360243 - 2¹ = 51360241 is a prime.

It is a super-2 number, since 2×51360243² = 5275749122038098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51360241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778153 + ... + 778218.

It is an arithmetic number, because the mean of its divisors is an integer number (9338232).

Almost surely, 2^51360243 is an apocalyptic number.

51360243 is a deficient number, since it is larger than the sum of its proper divisors (23345613).

51360243 is a wasteful number, since it uses less digits than its factorization.

51360243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556385.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 51360243 is about 7166.6061005193. The cubic root of 51360243 is about 371.7140897703.

Adding to 51360243 its reverse (34206315), we get a palindrome (85566558).

The spelling of 51360243 in words is "fifty-one million, three hundred sixty thousand, two hundred forty-three".