501045109 has 2 divisors, whose sum is σ = 501045110. Its totient is φ = 501045108.

The previous prime is 501045053. The next prime is 501045121. The reversal of 501045109 is 901540105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 489382884 + 11662225 = 22122^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 501045109 - 2⁹ = 501044597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501040109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250522554 + 250522555.

It is an arithmetic number, because the mean of its divisors is an integer number (250522555).

Almost surely, 2^501045109 is an apocalyptic number.

It is an amenable number.

501045109 is a deficient number, since it is larger than the sum of its proper divisors (1).

501045109 is an equidigital number, since it uses as much as digits as its factorization.

501045109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 501045109 is about 22384.0369236650. The cubic root of 501045109 is about 794.2531435077.

The spelling of 501045109 in words is "five hundred one million, forty-five thousand, one hundred nine".