1051321 has 8 divisors (see below), whose sum is σ = 1085760. Its totient is φ = 1017552.

The previous prime is 1051319. The next prime is 1051333. The reversal of 1051321 is 1231501.

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 1051321 - 2¹ = 1051319 is a prime.

It is a super-2 number, since 2×1051321² = 2210551690082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051301) 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, 5991 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (135720).

2^1051321 is an apocalyptic number.

It is an amenable number.

1051321 is a deficient number, since it is larger than the sum of its proper divisors (34439).

1051321 is a wasteful number, since it uses less digits than its factorization.

1051321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1051321 is about 1025.3394559852. The cubic root of 1051321 is about 101.6822419328.

Adding to 1051321 its reverse (1231501), we get a palindrome (2282822).

The spelling of 1051321 in words is "one million, fifty-one thousand, three hundred twenty-one".