1601251 has 4 divisors (see below), whose sum is σ = 1621600. Its totient is φ = 1580904.

The previous prime is 1601239. The next prime is 1601261. The reversal of 1601251 is 1521061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1521061 = 47 ⋅32363.

It is a cyclic number.

It is not a de Polignac number, because 1601251 - 2⁵ = 1601219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601231) 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, 10056 + ... + 10213.

It is an arithmetic number, because the mean of its divisors is an integer number (405400).

2^1601251 is an apocalyptic number.

1601251 is a deficient number, since it is larger than the sum of its proper divisors (20349).

1601251 is an equidigital number, since it uses as much as digits as its factorization.

1601251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20348.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1601251 is about 1265.4054686147. The cubic root of 1601251 is about 116.9911844723.

The spelling of 1601251 in words is "one million, six hundred one thousand, two hundred fifty-one".