1055210321 has 8 divisors (see below), whose sum is σ = 1153211904. Its totient is φ = 957554320.

The previous prime is 1055210311. The next prime is 1055210369. The reversal of 1055210321 is 1230125501.

It is a happy number.

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 1055210321 - 2⁶ = 1055210257 is a prime.

It is a super-2 number, since 2×1055210321² = 2226937643089846082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1055210293 and 1055210302.

It is not an unprimeable number, because it can be changed into a prime (1055210311) 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, 79985 + ... + 92238.

It is an arithmetic number, because the mean of its divisors is an integer number (144151488).

Almost surely, 2^1055210321 is an apocalyptic number.

1055210321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1055210321 is a deficient number, since it is larger than the sum of its proper divisors (98001583).

1055210321 is a wasteful number, since it uses less digits than its factorization.

1055210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172791.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1055210321 is about 32484.0010004925. The cubic root of 1055210321 is about 1018.0747745312.

Adding to 1055210321 its reverse (1230125501), we get a palindrome (2285335822).

The spelling of 1055210321 in words is "one billion, fifty-five million, two hundred ten thousand, three hundred twenty-one".