164502557 has 6 divisors (see below), whose sum is σ = 174748698. Its totient is φ = 154825664.

The previous prime is 164502553. The next prime is 164502593. The reversal of 164502557 is 755205461.

164502557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 34975396 + 129527161 = 5914^2 + 11381^2 .

It is not a de Polignac number, because 164502557 - 2² = 164502553 is a prime.

It is a super-2 number, since 2×164502557² = 54122182519076498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164502553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284318 + ... + 284895.

It is an arithmetic number, because the mean of its divisors is an integer number (29124783).

Almost surely, 2^164502557 is an apocalyptic number.

164502557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

164502557 is a deficient number, since it is larger than the sum of its proper divisors (10246141).

164502557 is an equidigital number, since it uses as much as digits as its factorization.

164502557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569247 (or 569230 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 164502557 is about 12825.8550202316. The cubic root of 164502557 is about 547.9289128046.

The spelling of 164502557 in words is "one hundred sixty-four million, five hundred two thousand, five hundred fifty-seven".