501653149 has 2 divisors, whose sum is σ = 501653150. Its totient is φ = 501653148.

The previous prime is 501653147. The next prime is 501653189. The reversal of 501653149 is 941356105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353252025 + 148401124 = 18795^2 + 12182^2 .

It is a cyclic number.

It is not a de Polignac number, because 501653149 - 2¹ = 501653147 is a prime.

Together with 501653147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501653147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250826574 + 250826575.

It is an arithmetic number, because the mean of its divisors is an integer number (250826575).

Almost surely, 2^501653149 is an apocalyptic number.

It is an amenable number.

501653149 is a deficient number, since it is larger than the sum of its proper divisors (1).

501653149 is an equidigital number, since it uses as much as digits as its factorization.

501653149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 501653149 is about 22397.6148060458. The cubic root of 501653149 is about 794.5743005247.

The spelling of 501653149 in words is "five hundred one million, six hundred fifty-three thousand, one hundred forty-nine".