1544232401 has 4 divisors (see below), whose sum is σ = 1544367972. Its totient is φ = 1544096832.

The previous prime is 1544232379. The next prime is 1544232413. The reversal of 1544232401 is 1042324451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1348652176 + 195580225 = 36724^2 + 13985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1544232401 - 2¹⁴ = 1544216017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1544232421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48956 + ... + 74061.

It is an arithmetic number, because the mean of its divisors is an integer number (386091993).

Almost surely, 2^1544232401 is an apocalyptic number.

It is an amenable number.

1544232401 is a deficient number, since it is larger than the sum of its proper divisors (135571).

1544232401 is a wasteful number, since it uses less digits than its factorization.

1544232401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135570.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1544232401 is about 39296.7225223682. The cubic root of 1544232401 is about 1155.8572999562.

Adding to 1544232401 its reverse (1042324451), we get a palindrome (2586556852).

The spelling of 1544232401 in words is "one billion, five hundred forty-four million, two hundred thirty-two thousand, four hundred one".