400103552 has 16 divisors (see below), whose sum is σ = 797081550. Its totient is φ = 200051712.

The previous prime is 400103537. The next prime is 400103567. The reversal of 400103552 is 255301004.

It is an interprime number because it is at equal distance from previous prime (400103537) and next prime (400103567).

It can be written as a sum of positive squares in only one way, i.e., 375739456 + 24364096 = 19384^2 + 4936^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562777 + ... + 1563032.

Almost surely, 2^400103552 is an apocalyptic number.

It is an amenable number.

400103552 is a deficient number, since it is larger than the sum of its proper divisors (396977998).

400103552 is an equidigital number, since it uses as much as digits as its factorization.

400103552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125823 (or 3125811 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 400103552 is about 20002.5886324745. The cubic root of 400103552 is about 736.8698757138.

Adding to 400103552 its reverse (255301004), we get a palindrome (655404556).

The spelling of 400103552 in words is "four hundred million, one hundred three thousand, five hundred fifty-two".