650253521 has 2 divisors, whose sum is σ = 650253522. Its totient is φ = 650253520.

The previous prime is 650253509. The next prime is 650253581. The reversal of 650253521 is 125352056.

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., 493728400 + 156525121 = 22220^2 + 12511^2 .

It is a cyclic number.

It is not a de Polignac number, because 650253521 - 2²⁶ = 583144657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (650253581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325126760 + 325126761.

It is an arithmetic number, because the mean of its divisors is an integer number (325126761).

Almost surely, 2^650253521 is an apocalyptic number.

It is an amenable number.

650253521 is a deficient number, since it is larger than the sum of its proper divisors (1).

650253521 is an equidigital number, since it uses as much as digits as its factorization.

650253521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 650253521 is about 25500.0690391222. The cubic root of 650253521 is about 866.3517111146.

The spelling of 650253521 in words is "six hundred fifty million, two hundred fifty-three thousand, five hundred twenty-one".