664152551 has 2 divisors, whose sum is σ = 664152552. Its totient is φ = 664152550.

The previous prime is 664152539. The next prime is 664152569. The reversal of 664152551 is 155251466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664152551 - 2¹⁴ = 664136167 is a prime.

It is a super-2 number, since 2×664152551² = 882197221999615202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664152851) 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 as a sum of consecutive naturals, namely, 332076275 + 332076276.

It is an arithmetic number, because the mean of its divisors is an integer number (332076276).

Almost surely, 2^664152551 is an apocalyptic number.

664152551 is a deficient number, since it is larger than the sum of its proper divisors (1).

664152551 is an equidigital number, since it uses as much as digits as its factorization.

664152551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 35.

The square root of 664152551 is about 25771.1573469257. The cubic root of 664152551 is about 872.4809402437.

The spelling of 664152551 in words is "six hundred sixty-four million, one hundred fifty-two thousand, five hundred fifty-one".