65652251 has 4 divisors (see below), whose sum is σ = 75031152. Its totient is φ = 56273352.

The previous prime is 65652227. The next prime is 65652299. The reversal of 65652251 is 15225656.

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

It is a cyclic number.

It is not a de Polignac number, because 65652251 - 2⁶ = 65652187 is a prime.

It is a super-2 number, since 2×65652251² = 8620436122734002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65652221) 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, 4689440 + ... + 4689453.

It is an arithmetic number, because the mean of its divisors is an integer number (18757788).

Almost surely, 2^65652251 is an apocalyptic number.

65652251 is a deficient number, since it is larger than the sum of its proper divisors (9378901).

65652251 is an equidigital number, since it uses as much as digits as its factorization.

65652251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378900.

The product of its digits is 18000, while the sum is 32.

The square root of 65652251 is about 8102.6076666713. The cubic root of 65652251 is about 403.4129855818.

The spelling of 65652251 in words is "sixty-five million, six hundred fifty-two thousand, two hundred fifty-one".