541221530651 has 4 divisors (see below), whose sum is σ = 541358795952. Its totient is φ = 541084265352.

The previous prime is 541221530627. The next prime is 541221530653. The reversal of 541221530651 is 156035122145.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 541221530651 - 2¹⁰ = 541221529627 is a prime.

It is a super-2 number, since 2×541221530651² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541221530653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68626736 + ... + 68634621.

It is an arithmetic number, because the mean of its divisors is an integer number (135339698988).

Almost surely, 2^541221530651 is an apocalyptic number.

541221530651 is a deficient number, since it is larger than the sum of its proper divisors (137265301).

541221530651 is a wasteful number, since it uses less digits than its factorization.

541221530651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137265300.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 541221530651 its reverse (156035122145), we get a palindrome (697256652796).

The spelling of 541221530651 in words is "five hundred forty-one billion, two hundred twenty-one million, five hundred thirty thousand, six hundred fifty-one".