65050521 has 4 divisors (see below), whose sum is σ = 86734032. Its totient is φ = 43367012.

The previous prime is 65050499. The next prime is 65050523. The reversal of 65050521 is 12505056.

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 not a de Polignac number, because 65050521 - 2⁹ = 65050009 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 65050491 and 65050500.

It is not an unprimeable number, because it can be changed into a prime (65050523) 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, 10841751 + ... + 10841756.

It is an arithmetic number, because the mean of its divisors is an integer number (21683508).

Almost surely, 2^65050521 is an apocalyptic number.

It is an amenable number.

65050521 is a deficient number, since it is larger than the sum of its proper divisors (21683511).

65050521 is a wasteful number, since it uses less digits than its factorization.

65050521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21683510.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 65050521 is about 8065.3903191352. The cubic root of 65050521 is about 402.1767186697.

Adding to 65050521 its reverse (12505056), we get a palindrome (77555577).

The spelling of 65050521 in words is "sixty-five million, fifty thousand, five hundred twenty-one".