1365001 has 12 divisors (see below), whose sum is σ = 1556100. Its totient is φ = 1195040.

The previous prime is 1364971. The next prime is 1365011. The reversal of 1365001 is 1005631.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 853776 = 715^2 + 924^2 .

It is not a de Polignac number, because 1365001 - 2⁵ = 1364969 is a prime.

It is an Ulam number.

It is a Duffinian number.

1365001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1365011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3315 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (129675).

2^1365001 is an apocalyptic number.

1365001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1365001 is the 625-th centered heptagonal number.

It is an amenable number.

1365001 is a deficient number, since it is larger than the sum of its proper divisors (191099).

1365001 is a wasteful number, since it uses less digits than its factorization.

1365001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1365001 is about 1168.3325725152. The cubic root of 1365001 is about 110.9288021085.

The spelling of 1365001 in words is "one million, three hundred sixty-five thousand, one".