1051720560 has 360 divisors, whose sum is σ = 4000900176. Its totient is φ = 245514240.

The previous prime is 1051720529. The next prime is 1051720567. The reversal of 1051720560 is 650271501.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×1051720560² = 2212232272653427200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051720567) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10842432 + ... + 10842528.

Almost surely, 2^1051720560 is an apocalyptic number.

1051720560 is a gapful number since it is divisible by the number (10) 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 1051720560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000450088).

1051720560 is an abundant number, since it is smaller than the sum of its proper divisors (2949179616).

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

1051720560 is a wasteful number, since it uses less digits than its factorization.

1051720560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1051720560 is about 32430.2414422095. The cubic root of 1051720560 is about 1016.9512192240.

The spelling of 1051720560 in words is "one billion, fifty-one million, seven hundred twenty thousand, five hundred sixty".