66522253 has 12 divisors (see below), whose sum is σ = 77565600. Its totient is φ = 56884632.

The previous prime is 66522229. The next prime is 66522257. The reversal of 66522253 is 35222566.

It is a de Polignac number, because none of the positive numbers 2^k-66522253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66522257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23298 + ... + 25996.

It is an arithmetic number, because the mean of its divisors is an integer number (6463800).

Almost surely, 2^66522253 is an apocalyptic number.

It is an amenable number.

66522253 is a deficient number, since it is larger than the sum of its proper divisors (11043347).

66522253 is a wasteful number, since it uses less digits than its factorization.

66522253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3209 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 66522253 is about 8156.1175199969. The cubic root of 66522253 is about 405.1871370093.

The spelling of 66522253 in words is "sixty-six million, five hundred twenty-two thousand, two hundred fifty-three".