1054563221 has 8 divisors (see below), whose sum is σ = 1095461400. Its totient is φ = 1013967360.

The previous prime is 1054563203. The next prime is 1054563229. The reversal of 1054563221 is 1223654501.

It can be written as a sum of positive squares in 4 ways, for example, as 151560721 + 903002500 = 12311^2 + 30050^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1054563221 - 2¹⁸ = 1054301077 is a prime.

It is a super-2 number, since 2×1054563221² = 2224207174171789682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1054563229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68456 + ... + 82433.

It is an arithmetic number, because the mean of its divisors is an integer number (136932675).

Almost surely, 2^1054563221 is an apocalyptic number.

It is an amenable number.

1054563221 is a deficient number, since it is larger than the sum of its proper divisors (40898179).

1054563221 is a wasteful number, since it uses less digits than its factorization.

1054563221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151159.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1054563221 is about 32474.0391851707. The cubic root of 1054563221 is about 1017.8666230103.

The spelling of 1054563221 in words is "one billion, fifty-four million, five hundred sixty-three thousand, two hundred twenty-one".