1660052551 has 2 divisors, whose sum is σ = 1660052552. Its totient is φ = 1660052550.

The previous prime is 1660052521. The next prime is 1660052561. The reversal of 1660052551 is 1552500661.

It is a strong prime.

It is an emirp because it is prime and its reverse (1552500661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1660052551 - 2⁹ = 1660052039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660052521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830026275 + 830026276.

It is an arithmetic number, because the mean of its divisors is an integer number (830026276).

Almost surely, 2^1660052551 is an apocalyptic number.

1660052551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660052551 is an equidigital number, since it uses as much as digits as its factorization.

1660052551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1660052551 is about 40743.7424766061. The cubic root of 1660052551 is about 1184.0606419721.

The spelling of 1660052551 in words is "one billion, six hundred sixty million, fifty-two thousand, five hundred fifty-one".