5401215541 has 2 divisors, whose sum is σ = 5401215542. Its totient is φ = 5401215540.

The previous prime is 5401215497. The next prime is 5401215553. The reversal of 5401215541 is 1455121045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4410288100 + 990927441 = 66410^2 + 31479^2 .

It is a cyclic number.

It is not a de Polignac number, because 5401215541 - 2²⁵ = 5367661109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5401215041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700607770 + 2700607771.

It is an arithmetic number, because the mean of its divisors is an integer number (2700607771).

Almost surely, 2^5401215541 is an apocalyptic number.

It is an amenable number.

5401215541 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401215541 is an equidigital number, since it uses as much as digits as its factorization.

5401215541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 5401215541 is about 73492.9625270338. The cubic root of 5401215541 is about 1754.5422724385.

Adding to 5401215541 its reverse (1455121045), we get a palindrome (6856336586).

The spelling of 5401215541 in words is "five billion, four hundred one million, two hundred fifteen thousand, five hundred forty-one".