65021001 has 8 divisors (see below), whose sum is σ = 86812224. Its totient is φ = 43288560.

The previous prime is 65020999. The next prime is 65021017. The reversal of 65021001 is 10012056.

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

It is not a de Polignac number, because 65021001 - 2¹ = 65020999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65021051) 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, 12045 + ... + 16586.

It is an arithmetic number, because the mean of its divisors is an integer number (10851528).

Almost surely, 2^65021001 is an apocalyptic number.

It is an amenable number.

65021001 is a deficient number, since it is larger than the sum of its proper divisors (21791223).

65021001 is a wasteful number, since it uses less digits than its factorization.

65021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29391.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 65021001 is about 8063.5600698451. The cubic root of 65021001 is about 402.1158733817.

Adding to 65021001 its reverse (10012056), we get a palindrome (75033057).

It can be divided in two parts, 6502 and 1001, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 65021001 in words is "sixty-five million, twenty-one thousand, one".