1601145 has 96 divisors (see below), whose sum is σ = 3773952. Its totient is φ = 608256.

The previous prime is 1601137. The next prime is 1601147. The reversal of 1601145 is 5411061.

It is not a de Polignac number, because 1601145 - 2³ = 1601137 is a prime.

It is a super-2 number, since 2×1601145² = 5127330622050, which contains 22 as substring.

1601145 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601147) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69604 + ... + 69626.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2^1601145 is an apocalyptic number.

1601145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1601145 is an abundant number, since it is smaller than the sum of its proper divisors (2172807).

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

1601145 is a wasteful number, since it uses less digits than its factorization.

1601145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1601145 is about 1265.3635841133. The cubic root of 1601145 is about 116.9886028784.

The spelling of 1601145 in words is "one million, six hundred one thousand, one hundred forty-five".