401653 has 8 divisors (see below), whose sum is σ = 468800. Its totient is φ = 343980.

The previous prime is 401651. The next prime is 401669. The reversal of 401653 is 356104.

It is not a de Polignac number, because 401653 - 2¹ = 401651 is a prime.

It is a super-2 number, since 2×401653² = 322650264818, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243 + ... + 928.

It is an arithmetic number, because the mean of its divisors is an integer number (58600).

2⁴⁰¹⁶⁵³ is an apocalyptic number.

It is an amenable number.

401653 is a deficient number, since it is larger than the sum of its proper divisors (67147).

401653 is an equidigital number, since it uses as much as digits as its factorization.

401653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 401653 is about 633.7609959598. The cubic root of 401653 is about 73.7819855512.

Adding to 401653 its reverse (356104), we get a palindrome (757757).

The spelling of 401653 in words is "four hundred one thousand, six hundred fifty-three".