65138201 has 4 divisors (see below), whose sum is σ = 65553252. Its totient is φ = 64723152.

The previous prime is 65138197. The next prime is 65138207. The reversal of 65138201 is 10283156.

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 46854025 + 18284176 = 6845^2 + 4276^2 .

It is a cyclic number.

It is not a de Polignac number, because 65138201 - 2² = 65138197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65138207) 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, 207290 + ... + 207603.

It is an arithmetic number, because the mean of its divisors is an integer number (16388313).

Almost surely, 2^65138201 is an apocalyptic number.

It is an amenable number.

65138201 is a deficient number, since it is larger than the sum of its proper divisors (415051).

65138201 is a wasteful number, since it uses less digits than its factorization.

65138201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415050.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 65138201 is about 8070.8240595369. The cubic root of 65138201 is about 402.3573322538.

The spelling of 65138201 in words is "sixty-five million, one hundred thirty-eight thousand, two hundred one".