1051273520 has 80 divisors (see below), whose sum is σ = 2676926880. Its totient is φ = 380774400.

The previous prime is 1051273481. The next prime is 1051273583. The reversal of 1051273520 is 253721501.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1051273520² = 2210352027706380800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051273520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234500 + ... + 238940.

It is an arithmetic number, because the mean of its divisors is an integer number (33461586).

Almost surely, 2^1051273520 is an apocalyptic number.

1051273520 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 1051273520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338463440).

1051273520 is an abundant number, since it is smaller than the sum of its proper divisors (1625653360).

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

1051273520 is a wasteful number, since it uses less digits than its factorization.

1051273520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4734 (or 4728 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1051273520 is about 32423.3483773653. The cubic root of 1051273520 is about 1016.8071117750.

The spelling of 1051273520 in words is "one billion, fifty-one million, two hundred seventy-three thousand, five hundred twenty".