164435251 has 2 divisors, whose sum is σ = 164435252. Its totient is φ = 164435250.

The previous prime is 164435213. The next prime is 164435267. The reversal of 164435251 is 152534461.

It is a happy number.

164435251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164435251 - 2⁷ = 164435123 is a prime.

It is a super-3 number, since 3×164435251³ (a number of 26 digits) contains 333 as substring.

It is equal to p_9209119 and since 164435251 and 9209119 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (164435351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82217625 + 82217626.

It is an arithmetic number, because the mean of its divisors is an integer number (82217626).

Almost surely, 2^164435251 is an apocalyptic number.

164435251 is a deficient number, since it is larger than the sum of its proper divisors (1).

164435251 is an equidigital number, since it uses as much as digits as its factorization.

164435251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 31.

The square root of 164435251 is about 12823.2309111238. The cubic root of 164435251 is about 547.8541744846.

The spelling of 164435251 in words is "one hundred sixty-four million, four hundred thirty-five thousand, two hundred fifty-one".