541221512 has 32 divisors (see below), whose sum is σ = 1094643480. Its totient is φ = 249384960.

The previous prime is 541221493. The next prime is 541221553. The reversal of 541221512 is 215122145.

It can be written as a sum of positive squares in 4 ways, for example, as 297424516 + 243796996 = 17246^2 + 15614^2 .

It is a super-2 number, since 2×541221512² = 585841450103132288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64808 + ... + 72680.

Almost surely, 2^541221512 is an apocalyptic number.

541221512 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

541221512 is an abundant number, since it is smaller than the sum of its proper divisors (553421968).

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

541221512 is a wasteful number, since it uses less digits than its factorization.

541221512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8549 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 541221512 is about 23264.1679842628. The cubic root of 541221512 is about 814.9388399285.

Adding to 541221512 its reverse (215122145), we get a palindrome (756343657).

The spelling of 541221512 in words is "five hundred forty-one million, two hundred twenty-one thousand, five hundred twelve".