51410621 has 4 divisors (see below), whose sum is σ = 52504512. Its totient is φ = 50316732.

The previous prime is 51410609. The next prime is 51410627. The reversal of 51410621 is 12601415.

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: 12601415 = 5 ⋅2520283.

It is a cyclic number.

It is not a de Polignac number, because 51410621 - 2¹⁰ = 51409597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51410593 and 51410602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51410627) 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, 546875 + ... + 546968.

It is an arithmetic number, because the mean of its divisors is an integer number (13126128).

Almost surely, 2^51410621 is an apocalyptic number.

It is an amenable number.

51410621 is a deficient number, since it is larger than the sum of its proper divisors (1093891).

51410621 is a wasteful number, since it uses less digits than its factorization.

51410621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093890.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51410621 is about 7170.1200129426. The cubic root of 51410621 is about 371.8355851265.

The spelling of 51410621 in words is "fifty-one million, four hundred ten thousand, six hundred twenty-one".