401511101 has 16 divisors (see below), whose sum is σ = 426147840. Its totient is φ = 377760240.

The previous prime is 401511053. The next prime is 401511109. The reversal of 401511101 is 101115104.

It is a cyclic number.

It is not a de Polignac number, because 401511101 - 2⁶ = 401511037 is a prime.

It is a super-2 number, since 2×401511101² = 322422328452464402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401511109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162860 + ... + 165306.

It is an arithmetic number, because the mean of its divisors is an integer number (26634240).

Almost surely, 2^401511101 is an apocalyptic number.

It is an amenable number.

401511101 is a deficient number, since it is larger than the sum of its proper divisors (24636739).

401511101 is a wasteful number, since it uses less digits than its factorization.

401511101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 401511101 is about 20037.7419136988. The cubic root of 401511101 is about 737.7329577579.

Adding to 401511101 its reverse (101115104), we get a palindrome (502626205).

The spelling of 401511101 in words is "four hundred one million, five hundred eleven thousand, one hundred one".