1355532401 has 6 divisors (see below), whose sum is σ = 1374361110. Its totient is φ = 1336958208.

The previous prime is 1355532397. The next prime is 1355532433. The reversal of 1355532401 is 1042355531.

It can be written as a sum of positive squares in 3 ways, for example, as 251698225 + 1103834176 = 15865^2 + 33224^2 .

It is not a de Polignac number, because 1355532401 - 2² = 1355532397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355532001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121856 + ... + 132513.

It is an arithmetic number, because the mean of its divisors is an integer number (229060185).

Almost surely, 2^1355532401 is an apocalyptic number.

It is an amenable number.

1355532401 is a deficient number, since it is larger than the sum of its proper divisors (18828709).

1355532401 is an frugal number, since it uses more digits than its factorization.

1355532401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254515 (or 254442 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1355532401 is about 36817.5556087038. Note that the first 3 decimals coincide. The cubic root of 1355532401 is about 1106.7171355973.

Adding to 1355532401 its reverse (1042355531), we get a palindrome (2397887932).

The spelling of 1355532401 in words is "one billion, three hundred fifty-five million, five hundred thirty-two thousand, four hundred one".