1553440226 has 24 divisors (see below), whose sum is σ = 2584755684. Its totient is φ = 699479040.

The previous prime is 1553440211. The next prime is 1553440243. The reversal of 1553440226 is 6220443551.

It can be written as a sum of positive squares in 6 ways, for example, as 24552025 + 1528888201 = 4955^2 + 39101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1553440192 and 1553440201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42191 + ... + 69906.

Almost surely, 2^1553440226 is an apocalyptic number.

1553440226 is a deficient number, since it is larger than the sum of its proper divisors (1031315458).

1553440226 is a wasteful number, since it uses less digits than its factorization.

1553440226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112166 (or 112153 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1553440226 is about 39413.7060678135. The cubic root of 1553440226 is about 1158.1500999101.

Adding to 1553440226 its reverse (6220443551), we get a palindrome (7773883777).

The spelling of 1553440226 in words is "one billion, five hundred fifty-three million, four hundred forty thousand, two hundred twenty-six".