1601545 has 16 divisors (see below), whose sum is σ = 2155968. Its totient is φ = 1131840.

The previous prime is 1601543. The next prime is 1601563. The reversal of 1601545 is 5451061.

It is not a de Polignac number, because 1601545 - 2¹ = 1601543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1642 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (134748).

2^1601545 is an apocalyptic number.

It is an amenable number.

1601545 is a deficient number, since it is larger than the sum of its proper divisors (554423).

1601545 is a wasteful number, since it uses less digits than its factorization.

1601545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1601545 is about 1265.5216315812. The cubic root of 1601545 is about 116.9983441458.

The spelling of 1601545 in words is "one million, six hundred one thousand, five hundred forty-five".