66524101 has 4 divisors (see below), whose sum is σ = 76027552. Its totient is φ = 57020652.

The previous prime is 66524071. The next prime is 66524131. The reversal of 66524101 is 10142566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (66524071) and next prime (66524131).

It is a cyclic number.

It is not a de Polignac number, because 66524101 - 2⁵ = 66524069 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 (66524131) 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, 4751715 + ... + 4751728.

It is an arithmetic number, because the mean of its divisors is an integer number (19006888).

Almost surely, 2^66524101 is an apocalyptic number.

It is an amenable number.

66524101 is a deficient number, since it is larger than the sum of its proper divisors (9503451).

66524101 is an equidigital number, since it uses as much as digits as its factorization.

66524101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9503450.

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

The square root of 66524101 is about 8156.2308084065. The cubic root of 66524101 is about 405.1908890314.

Adding to 66524101 its reverse (10142566), we get a palindrome (76666667).

The spelling of 66524101 in words is "sixty-six million, five hundred twenty-four thousand, one hundred one".