503051005381 has 16 divisors (see below), whose sum is σ = 508245910848. Its totient is φ = 497884060800.

The previous prime is 503051005351. The next prime is 503051005427. The reversal of 503051005381 is 183500150305.

It is a cyclic number.

It is not a de Polignac number, because 503051005381 - 2¹⁷ = 503050874309 is a prime.

It is a super-3 number, since 3×503051005381³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503051005351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140476011 + ... + 140479591.

It is an arithmetic number, because the mean of its divisors is an integer number (31765369428).

Almost surely, 2^503051005381 is an apocalyptic number.

It is an amenable number.

503051005381 is a deficient number, since it is larger than the sum of its proper divisors (5194905467).

503051005381 is a wasteful number, since it uses less digits than its factorization.

503051005381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7092.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 503051005381 its reverse (183500150305), we get a palindrome (686551155686).

The spelling of 503051005381 in words is "five hundred three billion, fifty-one million, five thousand, three hundred eighty-one".