1022545321 has 4 divisors (see below), whose sum is σ = 1168623232. Its totient is φ = 876467412.

The previous prime is 1022545313. The next prime is 1022545333. The reversal of 1022545321 is 1235452201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1235452201 = 35149².

It is a cyclic number.

It is not a de Polignac number, because 1022545321 - 2³ = 1022545313 is a prime.

It is a super-3 number, since 3×1022545321³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1022548321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73038945 + ... + 73038958.

It is an arithmetic number, because the mean of its divisors is an integer number (292155808).

Almost surely, 2^1022545321 is an apocalyptic number.

It is an amenable number.

1022545321 is a deficient number, since it is larger than the sum of its proper divisors (146077911).

1022545321 is an equidigital number, since it uses as much as digits as its factorization.

1022545321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146077910.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1022545321 is about 31977.2625626397. The cubic root of 1022545321 is about 1007.4593270898.

Adding to 1022545321 its reverse (1235452201), we get a palindrome (2257997522).

The spelling of 1022545321 in words is "one billion, twenty-two million, five hundred forty-five thousand, three hundred twenty-one".