65554521 has 8 divisors (see below), whose sum is σ = 87454464. Its totient is φ = 43678800.

The previous prime is 65554507. The next prime is 65554523. The reversal of 65554521 is 12545556.

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

It is not a de Polignac number, because 65554521 - 2⁶ = 65554457 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65554523) 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, 1671 + ... + 11571.

It is an arithmetic number, because the mean of its divisors is an integer number (10931808).

Almost surely, 2^65554521 is an apocalyptic number.

It is an amenable number.

65554521 is a deficient number, since it is larger than the sum of its proper divisors (21899943).

65554521 is a wasteful number, since it uses less digits than its factorization.

65554521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12111.

The product of its digits is 30000, while the sum is 33.

The square root of 65554521 is about 8096.5746461081. The cubic root of 65554521 is about 403.2127125287.

The spelling of 65554521 in words is "sixty-five million, five hundred fifty-four thousand, five hundred twenty-one".