501402149 has 2 divisors, whose sum is σ = 501402150. Its totient is φ = 501402148.

The previous prime is 501402113. The next prime is 501402151. The reversal of 501402149 is 941204105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425101924 + 76300225 = 20618^2 + 8735^2 .

It is a cyclic number.

It is not a de Polignac number, because 501402149 - 2²⁸ = 232966693 is a prime.

Together with 501402151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501402169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250701074 + 250701075.

It is an arithmetic number, because the mean of its divisors is an integer number (250701075).

Almost surely, 2^501402149 is an apocalyptic number.

It is an amenable number.

501402149 is a deficient number, since it is larger than the sum of its proper divisors (1).

501402149 is an equidigital number, since it uses as much as digits as its factorization.

501402149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 501402149 is about 22392.0108297580. The cubic root of 501402149 is about 794.4417578029.

The spelling of 501402149 in words is "five hundred one million, four hundred two thousand, one hundred forty-nine".