66252159 has 12 divisors (see below), whose sum is σ = 97046352. Its totient is φ = 43545600.

The previous prime is 66252157. The next prime is 66252181. The reversal of 66252159 is 95125266.

66252159 is a `hidden beast` number, since 6 + 625 + 21 + 5 + 9 = 666.

It is not a de Polignac number, because 66252159 - 2¹ = 66252157 is a prime.

It is a super-2 number, since 2×66252159² = 8778697144322562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66252157) 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, 51202 + ... + 52479.

It is an arithmetic number, because the mean of its divisors is an integer number (8087196).

Almost surely, 2^66252159 is an apocalyptic number.

66252159 is a deficient number, since it is larger than the sum of its proper divisors (30794193).

66252159 is a wasteful number, since it uses less digits than its factorization.

66252159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103758 (or 103755 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 66252159 is about 8139.5429232851. The cubic root of 66252159 is about 404.6380121723.

The spelling of 66252159 in words is "sixty-six million, two hundred fifty-two thousand, one hundred fifty-nine".