51410561 has 4 divisors (see below), whose sum is σ = 54116400. Its totient is φ = 48704724.

The previous prime is 51410549. The next prime is 51410581. The reversal of 51410561 is 16501415.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51410561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51410521) 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, 1352891 + ... + 1352928.

It is an arithmetic number, because the mean of its divisors is an integer number (13529100).

Almost surely, 2^51410561 is an apocalyptic number.

It is an amenable number.

51410561 is a deficient number, since it is larger than the sum of its proper divisors (2705839).

51410561 is a wasteful number, since it uses less digits than its factorization.

51410561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705838.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51410561 is about 7170.1158289110. The cubic root of 51410561 is about 371.8354404733.

Adding to 51410561 its reverse (16501415), we get a palindrome (67911976).

The spelling of 51410561 in words is "fifty-one million, four hundred ten thousand, five hundred sixty-one".