160663551 has 4 divisors (see below), whose sum is σ = 214218072. Its totient is φ = 107109032.

The previous prime is 160663507. The next prime is 160663597. The reversal of 160663551 is 155366061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 160663551 - 2¹³ = 160655359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160663501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26777256 + ... + 26777261.

It is an arithmetic number, because the mean of its divisors is an integer number (53554518).

Almost surely, 2^160663551 is an apocalyptic number.

160663551 is a deficient number, since it is larger than the sum of its proper divisors (53554521).

160663551 is an equidigital number, since it uses as much as digits as its factorization.

160663551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53554520.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 160663551 is about 12675.3126588657. The cubic root of 160663551 is about 543.6329692909.

The spelling of 160663551 in words is "one hundred sixty million, six hundred sixty-three thousand, five hundred fifty-one".