51736241 has 4 divisors (see below), whose sum is σ = 53405184. Its totient is φ = 50067300.

The previous prime is 51736213. The next prime is 51736247. The reversal of 51736241 is 14263715.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14263715 = 5 ⋅2852743.

It is a cyclic number.

It is not a de Polignac number, because 51736241 - 2²² = 47541937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51736247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834425 + ... + 834486.

It is an arithmetic number, because the mean of its divisors is an integer number (13351296).

Almost surely, 2^51736241 is an apocalyptic number.

It is an amenable number.

51736241 is a deficient number, since it is larger than the sum of its proper divisors (1668943).

51736241 is a wasteful number, since it uses less digits than its factorization.

51736241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668942.

The product of its digits is 5040, while the sum is 29.

The square root of 51736241 is about 7192.7909047879. The cubic root of 51736241 is about 372.6189665506.

Adding to 51736241 its reverse (14263715), we get a palindrome (65999956).

The spelling of 51736241 in words is "fifty-one million, seven hundred thirty-six thousand, two hundred forty-one".