2051520 has 56 divisors (see below), whose sum is σ = 6516624. Its totient is φ = 546816.

The previous prime is 2051507. The next prime is 2051537. The reversal of 2051520 is 251502.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2051520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 2028.

2^2051520 is an apocalyptic number.

2051520 is a gapful number since it is divisible by the number (20) 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 2051520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3258312).

2051520 is an abundant number, since it is smaller than the sum of its proper divisors (4465104).

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

2051520 is a wasteful number, since it uses less digits than its factorization.

2051520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2051520 is about 1432.3128149954. The cubic root of 2051520 is about 127.0647983957.

The spelling of 2051520 in words is "two million, fifty-one thousand, five hundred twenty".