65126401 has 4 divisors (see below), whose sum is σ = 66886612. Its totient is φ = 63366192.

The previous prime is 65126393. The next prime is 65126407. The reversal of 65126401 is 10462156.

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 48316401 + 16810000 = 6951^2 + 4100^2 .

It is a cyclic number.

It is not a de Polignac number, because 65126401 - 2³ = 65126393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65126407) 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, 880050 + ... + 880123.

It is an arithmetic number, because the mean of its divisors is an integer number (16721653).

It is a Proth number, since it is equal to 3975 ⋅ 2¹⁴ + 1 and 3975 < 2¹⁴.

Almost surely, 2^65126401 is an apocalyptic number.

It is an amenable number.

65126401 is a deficient number, since it is larger than the sum of its proper divisors (1760211).

65126401 is a wasteful number, since it uses less digits than its factorization.

65126401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760210.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 65126401 is about 8070.0929982250. The cubic root of 65126401 is about 402.3330346672. Note that the first 3 decimals are identical.

Adding to 65126401 its reverse (10462156), we get a palindrome (75588557).

The spelling of 65126401 in words is "sixty-five million, one hundred twenty-six thousand, four hundred one".