1401775 has 12 divisors (see below), whose sum is σ = 1776672. Its totient is φ = 1096640.

The previous prime is 1401767. The next prime is 1401791. The reversal of 1401775 is 5771041.

It is not a de Polignac number, because 1401775 - 2³ = 1401767 is a prime.

It is a super-4 number, since 4×1401775⁴ (a number of 26 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579 + ... + 1771.

It is an arithmetic number, because the mean of its divisors is an integer number (148056).

2^1401775 is an apocalyptic number.

1401775 is a deficient number, since it is larger than the sum of its proper divisors (374897).

1401775 is a wasteful number, since it uses less digits than its factorization.

1401775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 1401775 is about 1183.9657934248. The cubic root of 1401775 is about 111.9161521672.

The spelling of 1401775 in words is "one million, four hundred one thousand, seven hundred seventy-five".