5201642549 has 2 divisors, whose sum is σ = 5201642550. Its totient is φ = 5201642548.

The previous prime is 5201642531. The next prime is 5201642581. The reversal of 5201642549 is 9452461025.

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., 3870706225 + 1330936324 = 62215^2 + 36482^2 .

It is a cyclic number.

It is not a de Polignac number, because 5201642549 - 2²⁰ = 5200593973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5201642599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600821274 + 2600821275.

It is an arithmetic number, because the mean of its divisors is an integer number (2600821275).

Almost surely, 2^5201642549 is an apocalyptic number.

It is an amenable number.

5201642549 is a deficient number, since it is larger than the sum of its proper divisors (1).

5201642549 is an equidigital number, since it uses as much as digits as its factorization.

5201642549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 5201642549 is about 72122.4136382027. The cubic root of 5201642549 is about 1732.6606068856.

The spelling of 5201642549 in words is "five billion, two hundred one million, six hundred forty-two thousand, five hundred forty-nine".