1401565 has 16 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 958720.

The previous prime is 1401559. The next prime is 1401571. The reversal of 1401565 is 5651041.

It is an interprime number because it is at equal distance from previous prime (1401559) and next prime (1401571).

It is not a de Polignac number, because 1401565 - 2⁷ = 1401437 is a prime.

1401565 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186 + ... + 1684.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

2^1401565 is an apocalyptic number.

It is an amenable number.

1401565 is a deficient number, since it is larger than the sum of its proper divisors (542435).

1401565 is a wasteful number, since it uses less digits than its factorization.

1401565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

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

The square root of 1401565 is about 1183.8771051085. The cubic root of 1401565 is about 111.9105631662.

The spelling of 1401565 in words is "one million, four hundred one thousand, five hundred sixty-five".