65501501 has 4 divisors (see below), whose sum is σ = 70540092. Its totient is φ = 60462912.

The previous prime is 65501489. The next prime is 65501509. The reversal of 65501501 is 10510556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29441476 + 36060025 = 5426^2 + 6005^2 .

It is a cyclic number.

It is not a de Polignac number, because 65501501 - 2⁶ = 65501437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65501509) 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, 2519276 + ... + 2519301.

It is an arithmetic number, because the mean of its divisors is an integer number (17635023).

Almost surely, 2^65501501 is an apocalyptic number.

It is an amenable number.

65501501 is a deficient number, since it is larger than the sum of its proper divisors (5038591).

65501501 is a wasteful number, since it uses less digits than its factorization.

65501501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038590.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 65501501 is about 8093.2997596778. The cubic root of 65501501 is about 403.1039780797.

The spelling of 65501501 in words is "sixty-five million, five hundred one thousand, five hundred one".