501210649 has 2 divisors, whose sum is σ = 501210650. Its totient is φ = 501210648.

The previous prime is 501210613. The next prime is 501210673. The reversal of 501210649 is 946012105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 349428249 + 151782400 = 18693^2 + 12320^2 .

It is a cyclic number.

It is not a de Polignac number, because 501210649 - 2¹⁵ = 501177881 is a prime.

It is a super-2 number, since 2×501210649² = 502424229342002402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (501217649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250605324 + 250605325.

It is an arithmetic number, because the mean of its divisors is an integer number (250605325).

Almost surely, 2^501210649 is an apocalyptic number.

It is an amenable number.

501210649 is a deficient number, since it is larger than the sum of its proper divisors (1).

501210649 is an equidigital number, since it uses as much as digits as its factorization.

501210649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 501210649 is about 22387.7343427154. The cubic root of 501210649 is about 794.3406048199.

The spelling of 501210649 in words is "five hundred one million, two hundred ten thousand, six hundred forty-nine".