650240557 has 2 divisors, whose sum is σ = 650240558. Its totient is φ = 650240556.

The previous prime is 650240501. The next prime is 650240573. The reversal of 650240557 is 755042056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 630712996 + 19527561 = 25114^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 650240557 - 2¹⁹ = 649716269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650240587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325120278 + 325120279.

It is an arithmetic number, because the mean of its divisors is an integer number (325120279).

Almost surely, 2^650240557 is an apocalyptic number.

It is an amenable number.

650240557 is a deficient number, since it is larger than the sum of its proper divisors (1).

650240557 is an equidigital number, since it uses as much as digits as its factorization.

650240557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 650240557 is about 25499.8148424650. The cubic root of 650240557 is about 866.3459536381.

The spelling of 650240557 in words is "six hundred fifty million, two hundred forty thousand, five hundred fifty-seven".