164342551 has 2 divisors, whose sum is σ = 164342552. Its totient is φ = 164342550.

The previous prime is 164342543. The next prime is 164342557. The reversal of 164342551 is 155243461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164342551 - 2³ = 164342543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164342557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82171275 + 82171276.

It is an arithmetic number, because the mean of its divisors is an integer number (82171276).

Almost surely, 2^164342551 is an apocalyptic number.

164342551 is a deficient number, since it is larger than the sum of its proper divisors (1).

164342551 is an equidigital number, since it uses as much as digits as its factorization.

164342551 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 164342551 is about 12819.6158678800. The cubic root of 164342551 is about 547.7512046162.

The spelling of 164342551 in words is "one hundred sixty-four million, three hundred forty-two thousand, five hundred fifty-one".