400550533 has 16 divisors (see below), whose sum is σ = 426703680. Its totient is φ = 374937984.

The previous prime is 400550519. The next prime is 400550537. The reversal of 400550533 is 335055004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400550533 - 2²¹ = 398453381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400550498 and 400550507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400550537) 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, 765610 + ... + 766132.

It is an arithmetic number, because the mean of its divisors is an integer number (26668980).

Almost surely, 2^400550533 is an apocalyptic number.

It is an amenable number.

400550533 is a deficient number, since it is larger than the sum of its proper divisors (26153147).

400550533 is a wasteful number, since it uses less digits than its factorization.

400550533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 400550533 is about 20013.7585925283. The cubic root of 400550533 is about 737.1441749181.

The spelling of 400550533 in words is "four hundred million, five hundred fifty thousand, five hundred thirty-three".