503378641 has 4 divisors (see below), whose sum is σ = 503448484. Its totient is φ = 503308800.

The previous prime is 503378633. The next prime is 503378657. The reversal of 503378641 is 146873305.

It is the 9160-th star number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146873305 = 5 ⋅29374661.

It can be written as a sum of positive squares in 2 ways, for example, as 293128641 + 210250000 = 17121^2 + 14500^2 .

It is a cyclic number.

It is not a de Polignac number, because 503378641 - 2³ = 503378633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 503378641.

It is not an unprimeable number, because it can be changed into a prime (503378741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22680 + ... + 39001.

It is an arithmetic number, because the mean of its divisors is an integer number (125862121).

Almost surely, 2^503378641 is an apocalyptic number.

It is an amenable number.

503378641 is a deficient number, since it is larger than the sum of its proper divisors (69843).

503378641 is an equidigital number, since it uses as much as digits as its factorization.

503378641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69842.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 503378641 is about 22436.1012878798. The cubic root of 503378641 is about 795.4842670091.

The spelling of 503378641 in words is "five hundred three million, three hundred seventy-eight thousand, six hundred forty-one".