5401242541 has 4 divisors (see below), whose sum is σ = 5401389532. Its totient is φ = 5401095552.

The previous prime is 5401242521. The next prime is 5401242551. The reversal of 5401242541 is 1452421045.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1452421045 = 5 ⋅290484209.

It can be written as a sum of positive squares in 2 ways, for example, as 3971646441 + 1429596100 = 63021^2 + 37810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5401242541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401242521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35965 + ... + 109981.

It is an arithmetic number, because the mean of its divisors is an integer number (1350347383).

Almost surely, 2^5401242541 is an apocalyptic number.

It is an amenable number.

5401242541 is a deficient number, since it is larger than the sum of its proper divisors (146991).

5401242541 is an equidigital number, since it uses as much as digits as its factorization.

5401242541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146990.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 5401242541 is about 73493.1462178617. The cubic root of 5401242541 is about 1754.5451960126.

Adding to 5401242541 its reverse (1452421045), we get a palindrome (6853663586).

The spelling of 5401242541 in words is "five billion, four hundred one million, two hundred forty-two thousand, five hundred forty-one".