503050381 has 2 divisors, whose sum is σ = 503050382. Its totient is φ = 503050380.

The previous prime is 503050367. The next prime is 503050399. The reversal of 503050381 is 183050305.

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., 468722500 + 34327881 = 21650^2 + 5859^2 .

It is a cyclic number.

It is not a de Polignac number, because 503050381 - 2¹¹ = 503048333 is a prime.

It is a super-2 number, since 2×503050381² = 506119371648490322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503053381) 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, 251525190 + 251525191.

It is an arithmetic number, because the mean of its divisors is an integer number (251525191).

Almost surely, 2^503050381 is an apocalyptic number.

It is an amenable number.

503050381 is a deficient number, since it is larger than the sum of its proper divisors (1).

503050381 is an equidigital number, since it uses as much as digits as its factorization.

503050381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 503050381 is about 22428.7846527626. The cubic root of 503050381 is about 795.3113140694.

The spelling of 503050381 in words is "five hundred three million, fifty thousand, three hundred eighty-one".