406187053 has 4 divisors (see below), whose sum is σ = 409152060. Its totient is φ = 403222048.

The previous prime is 406187039. The next prime is 406187057. The reversal of 406187053 is 350781604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167391844 + 238795209 = 12938^2 + 15453^2 .

It is a cyclic number.

It is not a de Polignac number, because 406187053 - 2²¹ = 404089901 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 (406187057) 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, 1482298 + ... + 1482571.

It is an arithmetic number, because the mean of its divisors is an integer number (102288015).

Almost surely, 2^406187053 is an apocalyptic number.

It is an amenable number.

406187053 is a deficient number, since it is larger than the sum of its proper divisors (2965007).

406187053 is a wasteful number, since it uses less digits than its factorization.

406187053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965006.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 406187053 is about 20154.0827873659. The cubic root of 406187053 is about 740.5857627691.

The spelling of 406187053 in words is "four hundred six million, one hundred eighty-seven thousand, fifty-three".