401015653 has 4 divisors (see below), whose sum is σ = 422121760. Its totient is φ = 379909548.

The previous prime is 401015651. The next prime is 401015663. The reversal of 401015653 is 356510104.

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 not a de Polignac number, because 401015653 - 2¹ = 401015651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401015651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10553025 + ... + 10553062.

It is an arithmetic number, because the mean of its divisors is an integer number (105530440).

Almost surely, 2^401015653 is an apocalyptic number.

It is an amenable number.

401015653 is a deficient number, since it is larger than the sum of its proper divisors (21106107).

401015653 is a wasteful number, since it uses less digits than its factorization.

401015653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21106106.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 401015653 is about 20025.3752274458. The cubic root of 401015653 is about 737.4293889305.

Adding to 401015653 its reverse (356510104), we get a palindrome (757525757).

It can be divided in two parts, 40101 and 5653, that added together give a palindrome (45754).

The spelling of 401015653 in words is "four hundred one million, fifteen thousand, six hundred fifty-three".