1051544320 has 36 divisors (see below), whose sum is σ = 2518780320. Its totient is φ = 420617216.

The previous prime is 1051544281. The next prime is 1051544357. The reversal of 1051544320 is 234451501.

It is a happy number.

It is a super-2 number, since 2×1051544320² = 2211490913848524800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409480 + ... + 412039.

It is an arithmetic number, because the mean of its divisors is an integer number (69966120).

Almost surely, 2^1051544320 is an apocalyptic number.

1051544320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051544320 is an abundant number, since it is smaller than the sum of its proper divisors (1467236000).

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

1051544320 is an frugal number, since it uses more digits than its factorization.

1051544320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821540 (or 821526 counting only the distinct ones).

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

The square root of 1051544320 is about 32427.5241114705. The cubic root of 1051544320 is about 1016.8944115187.

Adding to 1051544320 its reverse (234451501), we get a palindrome (1285995821).

The spelling of 1051544320 in words is "one billion, fifty-one million, five hundred forty-four thousand, three hundred twenty".