65356501 has 16 divisors (see below), whose sum is σ = 79849728. Its totient is φ = 52272000.

The previous prime is 65356493. The next prime is 65356507. The reversal of 65356501 is 10565356.

It is a 4-Lehmer number, since φ(65356501) divides (65356501-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 65356501 - 2³ = 65356493 is a prime.

It is a deceptive number, since it divides R_65356500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65356507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (4990608).

Almost surely, 2^65356501 is an apocalyptic number.

65356501 is the 6601-st pentagonal number.

It is an amenable number.

65356501 is a deficient number, since it is larger than the sum of its proper divisors (14493227).

65356501 is a wasteful number, since it uses less digits than its factorization.

65356501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9972.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 65356501 is about 8084.3367693336. The cubic root of 65356501 is about 402.8063092774.

The spelling of 65356501 in words is "sixty-five million, three hundred fifty-six thousand, five hundred one".