541221028 has 6 divisors (see below), whose sum is σ = 947136806. Its totient is φ = 270610512.

The previous prime is 541221013. The next prime is 541221029. The reversal of 541221028 is 820122145.

It can be written as a sum of positive squares in only one way, i.e., 446392384 + 94828644 = 21128^2 + 9738^2 .

It is a super-2 number, since 2×541221028² = 585840402298753568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 541220993 and 541221011.

It is not an unprimeable number, because it can be changed into a prime (541221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67652625 + ... + 67652632.

Almost surely, 2^541221028 is an apocalyptic number.

It is an amenable number.

541221028 is a deficient number, since it is larger than the sum of its proper divisors (405915778).

541221028 is a wasteful number, since it uses less digits than its factorization.

541221028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135305261 (or 135305259 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 541221028 is about 23264.1575819972. The cubic root of 541221028 is about 814.9385970024.

The spelling of 541221028 in words is "five hundred forty-one million, two hundred twenty-one thousand, twenty-eight".