164557087 has 8 divisors (see below), whose sum is σ = 168599376. Its totient is φ = 160524672.

The previous prime is 164557073. The next prime is 164557109. The reversal of 164557087 is 780755461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164557087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164557007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40053 + ... + 43969.

It is an arithmetic number, because the mean of its divisors is an integer number (21074922).

Almost surely, 2^164557087 is an apocalyptic number.

164557087 is a deficient number, since it is larger than the sum of its proper divisors (4042289).

164557087 is an equidigital number, since it uses as much as digits as its factorization.

164557087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 164557087 is about 12827.9806282984. The cubic root of 164557087 is about 547.9894493769.

The spelling of 164557087 in words is "one hundred sixty-four million, five hundred fifty-seven thousand, eighty-seven".