66152255 has 16 divisors (see below), whose sum is σ = 89208000. Its totient is φ = 46725888.

The previous prime is 66152239. The next prime is 66152279. The reversal of 66152255 is 55225166.

It is a cyclic number.

It is not a de Polignac number, because 66152255 - 2⁴ = 66152239 is a prime.

It is a super-2 number, since 2×66152255² = 8752241683170050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20630 + ... + 23619.

It is an arithmetic number, because the mean of its divisors is an integer number (5575500).

Almost surely, 2^66152255 is an apocalyptic number.

66152255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66152255 is a deficient number, since it is larger than the sum of its proper divisors (23055745).

66152255 is a wasteful number, since it uses less digits than its factorization.

66152255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44290.

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

The square root of 66152255 is about 8133.4036540676. The cubic root of 66152255 is about 404.4345204772.

The spelling of 66152255 in words is "sixty-six million, one hundred fifty-two thousand, two hundred fifty-five".