400522053 has 4 divisors (see below), whose sum is σ = 534029408. Its totient is φ = 267014700.

The previous prime is 400522051. The next prime is 400522063. The reversal of 400522053 is 350225004.

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 not a de Polignac number, because 400522053 - 2¹ = 400522051 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 (400522051) 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, 66753673 + ... + 66753678.

It is an arithmetic number, because the mean of its divisors is an integer number (133507352).

Almost surely, 2^400522053 is an apocalyptic number.

It is an amenable number.

400522053 is a deficient number, since it is larger than the sum of its proper divisors (133507355).

400522053 is a wasteful number, since it uses less digits than its factorization.

400522053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133507354.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 400522053 is about 20013.0470693495. The cubic root of 400522053 is about 737.1267036613.

Adding to 400522053 its reverse (350225004), we get a palindrome (750747057).

The spelling of 400522053 in words is "four hundred million, five hundred twenty-two thousand, fifty-three".