1401653 has 4 divisors (see below), whose sum is σ = 1529088. Its totient is φ = 1274220.

The previous prime is 1401641. The next prime is 1401679. The reversal of 1401653 is 3561041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401653 is a prime.

It is a super-2 number, since 2×1401653² = 3929262264818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63701 + ... + 63722.

It is an arithmetic number, because the mean of its divisors is an integer number (382272).

2^1401653 is an apocalyptic number.

It is an amenable number.

1401653 is a deficient number, since it is larger than the sum of its proper divisors (127435).

1401653 is a wasteful number, since it uses less digits than its factorization.

1401653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127434.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1401653 is about 1183.9142705450. The cubic root of 1401653 is about 111.9129052917.

Adding to 1401653 its reverse (3561041), we get a palindrome (4962694).

The spelling of 1401653 in words is "one million, four hundred one thousand, six hundred fifty-three".