501115001500 has 48 divisors (see below), whose sum is σ = 1095769112256. Its totient is φ = 200201688000.

The previous prime is 501115001489. The next prime is 501115001509. The reversal of 501115001500 is 5100511105.

It is a happy number.

It is a super-2 number, since 2×501115001500² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501115001509) 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, 199872 + ... + 1020871.

It is an arithmetic number, because the mean of its divisors is an integer number (22828523172).

Almost surely, 2^501115001500 is an apocalyptic number.

501115001500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

501115001500 is an abundant number, since it is smaller than the sum of its proper divisors (594654110756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501115001500 is a wasteful number, since it uses less digits than its factorization.

501115001500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221583 (or 1221571 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 501115001500 its reverse (5100511105), we get a palindrome (506215512605).

The spelling of 501115001500 in words is "five hundred one billion, one hundred fifteen million, one thousand, five hundred".