1601256 has 32 divisors (see below), whose sum is σ = 4040640. Its totient is φ = 528768.

The previous prime is 1601239. The next prime is 1601261. The reversal of 1601256 is 6521061.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3045 + ... + 3531.

It is an arithmetic number, because the mean of its divisors is an integer number (126270).

2^1601256 is an apocalyptic number.

It is an amenable number.

1601256 is an abundant number, since it is smaller than the sum of its proper divisors (2439384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601256 is a wasteful number, since it uses less digits than its factorization.

1601256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1601256 is about 1265.4074442645. The cubic root of 1601256 is about 116.9913062428.

The spelling of 1601256 in words is "one million, six hundred one thousand, two hundred fifty-six".