164255477 has 2 divisors, whose sum is σ = 164255478. Its totient is φ = 164255476.

The previous prime is 164255461. The next prime is 164255491. The reversal of 164255477 is 774552461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125641681 + 38613796 = 11209^2 + 6214^2 .

It is a cyclic number.

It is not a de Polignac number, because 164255477 - 2⁴ = 164255461 is a prime.

It is equal to p_9199616 and since 164255477 and 9199616 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164255677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82127738 + 82127739.

It is an arithmetic number, because the mean of its divisors is an integer number (82127739).

Almost surely, 2^164255477 is an apocalyptic number.

It is an amenable number.

164255477 is a deficient number, since it is larger than the sum of its proper divisors (1).

164255477 is an equidigital number, since it uses as much as digits as its factorization.

164255477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 235200, while the sum is 41.

The square root of 164255477 is about 12816.2192943161. The cubic root of 164255477 is about 547.6544487568.

The spelling of 164255477 in words is "one hundred sixty-four million, two hundred fifty-five thousand, four hundred seventy-seven".