5541142261 has 2 divisors, whose sum is σ = 5541142262. Its totient is φ = 5541142260.

The previous prime is 5541142253. The next prime is 5541142279. The reversal of 5541142261 is 1622411455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5329876036 + 211266225 = 73006^2 + 14535^2 .

It is a cyclic number.

It is not a de Polignac number, because 5541142261 - 2³ = 5541142253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5541142291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770571130 + 2770571131.

It is an arithmetic number, because the mean of its divisors is an integer number (2770571131).

Almost surely, 2^5541142261 is an apocalyptic number.

It is an amenable number.

5541142261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5541142261 is an equidigital number, since it uses as much as digits as its factorization.

5541142261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 31.

The square root of 5541142261 is about 74438.8491380677. The cubic root of 5541142261 is about 1769.5646477353.

The spelling of 5541142261 in words is "five billion, five hundred forty-one million, one hundred forty-two thousand, two hundred sixty-one".