1053621 has 8 divisors (see below), whose sum is σ = 1560960. Its totient is φ = 702396.

The previous prime is 1053617. The next prime is 1053691. The reversal of 1053621 is 1263501.

It is not a de Polignac number, because 1053621 - 2² = 1053617 is a prime.

It is a super-2 number, since 2×1053621² = 2220234423282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1053594 and 1053603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053691) 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, 19485 + ... + 19538.

It is an arithmetic number, because the mean of its divisors is an integer number (195120).

2^1053621 is an apocalyptic number.

It is an amenable number.

1053621 is a deficient number, since it is larger than the sum of its proper divisors (507339).

1053621 is an equidigital number, since it uses as much as digits as its factorization.

1053621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39032 (or 39026 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1053621 is about 1026.4604230071. The cubic root of 1053621 is about 101.7563388123.

The spelling of 1053621 in words is "one million, fifty-three thousand, six hundred twenty-one".