400552 has 8 divisors (see below), whose sum is σ = 751050. Its totient is φ = 200272.

The previous prime is 400523. The next prime is 400559. The reversal of 400552 is 255004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 306916 + 93636 = 554^2 + 306^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (400559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25027 + ... + 25042.

2⁴⁰⁰⁵⁵² is an apocalyptic number.

It is an amenable number.

400552 is a deficient number, since it is larger than the sum of its proper divisors (350498).

400552 is a wasteful number, since it uses less digits than its factorization.

400552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50075 (or 50071 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 400552 is about 632.8917758985. The cubic root of 400552 is about 73.7145074837.

Adding to 400552 its reverse (255004), we get a palindrome (655556).

The spelling of 400552 in words is "four hundred thousand, five hundred fifty-two".