1533542401 has 2 divisors, whose sum is σ = 1533542402. Its totient is φ = 1533542400.

The previous prime is 1533542377. The next prime is 1533542407. The reversal of 1533542401 is 1042453351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1286298225 + 247244176 = 35865^2 + 15724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1533542401 - 2¹³ = 1533534209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1533542401.

It is not a weakly prime, because it can be changed into another prime (1533542407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766771200 + 766771201.

It is an arithmetic number, because the mean of its divisors is an integer number (766771201).

It is a Proth number, since it is equal to 2925 ⋅ 2¹⁹ + 1 and 2925 < 2¹⁹.

Almost surely, 2^1533542401 is an apocalyptic number.

It is an amenable number.

1533542401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1533542401 is an equidigital number, since it uses as much as digits as its factorization.

1533542401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1533542401 is about 39160.4698771606. The cubic root of 1533542401 is about 1153.1839681960.

Adding to 1533542401 its reverse (1042453351), we get a palindrome (2575995752).

The spelling of 1533542401 in words is "one billion, five hundred thirty-three million, five hundred forty-two thousand, four hundred one".