1054521 has 12 divisors (see below), whose sum is σ = 1640548. Its totient is φ = 648864.

The previous prime is 1054517. The next prime is 1054523. The reversal of 1054521 is 1254501.

It can be written as a sum of positive squares in 2 ways, for example, as 308025 + 746496 = 555^2 + 864^2 .

It is not a de Polignac number, because 1054521 - 2² = 1054517 is a prime.

It is a super-2 number, since 2×1054521² = 2224029078882, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1054494 and 1054503.

It is not an unprimeable number, because it can be changed into a prime (1054523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4390 + ... + 4623.

2^1054521 is an apocalyptic number.

It is an amenable number.

1054521 is a deficient number, since it is larger than the sum of its proper divisors (586027).

1054521 is a wasteful number, since it uses less digits than its factorization.

1054521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032 (or 9029 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1054521 is about 1026.8987291841. The cubic root of 1054521 is about 101.7853038897.

It can be divided in two parts, 10545 and 21, that multiplied together give a triangular number (221445 = T₆₆₅).

The spelling of 1054521 in words is "one million, fifty-four thousand, five hundred twenty-one".