168101551 has 2 divisors, whose sum is σ = 168101552. Its totient is φ = 168101550.

The previous prime is 168101539. The next prime is 168101567. The reversal of 168101551 is 155101861.

It is a weak prime.

It is an emirp because it is prime and its reverse (155101861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168101551 - 2⁵ = 168101519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168102551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84050775 + 84050776.

It is an arithmetic number, because the mean of its divisors is an integer number (84050776).

Almost surely, 2^168101551 is an apocalyptic number.

168101551 is a deficient number, since it is larger than the sum of its proper divisors (1).

168101551 is an equidigital number, since it uses as much as digits as its factorization.

168101551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 28.

The square root of 168101551 is about 12965.3982198774. The cubic root of 168101551 is about 551.8959920525.

The spelling of 168101551 in words is "one hundred sixty-eight million, one hundred one thousand, five hundred fifty-one".