1022545512 has 128 divisors (see below), whose sum is σ = 3021235200. Its totient is φ = 319334400.

The previous prime is 1022545493. The next prime is 1022545519. The reversal of 1022545512 is 2155452201.

1022545512 is a `hidden beast` number, since 102 + 2 + 5 + 4 + 551 + 2 = 666.

It is a super-2 number, since 2×1022545512² = 2091198648222684288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1022545519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031337 + ... + 1032327.

It is an arithmetic number, because the mean of its divisors is an integer number (23603400).

Almost surely, 2^1022545512 is an apocalyptic number.

1022545512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022545512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510617600).

1022545512 is an abundant number, since it is smaller than the sum of its proper divisors (1998689688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1022545512 is a wasteful number, since it uses less digits than its factorization.

1022545512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1022545512 is about 31977.2655491366. The cubic root of 1022545512 is about 1007.4593898172.

Adding to 1022545512 its reverse (2155452201), we get a palindrome (3177997713).

The spelling of 1022545512 in words is "one billion, twenty-two million, five hundred forty-five thousand, five hundred twelve".