160221461 has 4 divisors (see below), whose sum is σ = 160262124. Its totient is φ = 160180800.

The previous prime is 160221437. The next prime is 160221469. The reversal of 160221461 is 164122061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164122061 = 67 ⋅2449583.

It can be written as a sum of positive squares in 2 ways, for example, as 53202436 + 107019025 = 7294^2 + 10345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160221461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160221469) 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, 13700 + ... + 22541.

It is an arithmetic number, because the mean of its divisors is an integer number (40065531).

Almost surely, 2^160221461 is an apocalyptic number.

It is an amenable number.

160221461 is a deficient number, since it is larger than the sum of its proper divisors (40663).

160221461 is an equidigital number, since it uses as much as digits as its factorization.

160221461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40662.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 160221461 is about 12657.8616282530. The cubic root of 160221461 is about 543.1338818614.

The spelling of 160221461 in words is "one hundred sixty million, two hundred twenty-one thousand, four hundred sixty-one".