1550542401 has 48 divisors (see below), whose sum is σ = 2412633600. Its totient is φ = 957280896.

The previous prime is 1550542379. The next prime is 1550542403. The reversal of 1550542401 is 1042450551.

It is not a de Polignac number, because 1550542401 - 2¹⁷ = 1550411329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1550542403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 865815 + ... + 867603.

It is an arithmetic number, because the mean of its divisors is an integer number (50263200).

Almost surely, 2^1550542401 is an apocalyptic number.

It is an amenable number.

1550542401 is a deficient number, since it is larger than the sum of its proper divisors (862091199).

1550542401 is a wasteful number, since it uses less digits than its factorization.

1550542401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1550542401 is about 39376.9272671193. The cubic root of 1550542401 is about 1157.4295045754.

Adding to 1550542401 its reverse (1042450551), we get a palindrome (2592992952).

The spelling of 1550542401 in words is "one billion, five hundred fifty million, five hundred forty-two thousand, four hundred one".