2170451551 has 2 divisors, whose sum is σ = 2170451552. Its totient is φ = 2170451550.

The previous prime is 2170451513. The next prime is 2170451581. The reversal of 2170451551 is 1551540712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2170451551 - 2¹¹ = 2170449503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2170451581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085225775 + 1085225776.

It is an arithmetic number, because the mean of its divisors is an integer number (1085225776).

Almost surely, 2^2170451551 is an apocalyptic number.

2170451551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170451551 is an equidigital number, since it uses as much as digits as its factorization.

2170451551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 2170451551 is about 46588.1052523066. The cubic root of 2170451551 is about 1294.7423847163.

The spelling of 2170451551 in words is "two billion, one hundred seventy million, four hundred fifty-one thousand, five hundred fifty-one".