503741921 has 2 divisors, whose sum is σ = 503741922. Its totient is φ = 503741920.

The previous prime is 503741897. The next prime is 503741969. The reversal of 503741921 is 129147305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300536896 + 203205025 = 17336^2 + 14255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503741921 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (503741221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251870960 + 251870961.

It is an arithmetic number, because the mean of its divisors is an integer number (251870961).

Almost surely, 2^503741921 is an apocalyptic number.

It is an amenable number.

503741921 is a deficient number, since it is larger than the sum of its proper divisors (1).

503741921 is an equidigital number, since it uses as much as digits as its factorization.

503741921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 503741921 is about 22444.1957084677. The cubic root of 503741921 is about 795.6755835852.

The spelling of 503741921 in words is "five hundred three million, seven hundred forty-one thousand, nine hundred twenty-one".