1520052020 has 48 divisors (see below), whose sum is σ = 3244924368. Its totient is φ = 598041600.

The previous prime is 1520052011. The next prime is 1520052029. The reversal of 1520052020 is 202500251.

It is an interprime number because it is at equal distance from previous prime (1520052011) and next prime (1520052029).

It can be written as a sum of positive squares in 8 ways, for example, as 149719696 + 1370332324 = 12236^2 + 37018^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1520052020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520052029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314744 + ... + 319536.

It is an arithmetic number, because the mean of its divisors is an integer number (67602591).

Almost surely, 2^1520052020 is an apocalyptic number.

1520052020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520052020 is an abundant number, since it is smaller than the sum of its proper divisors (1724872348).

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

1520052020 is a wasteful number, since it uses less digits than its factorization.

1520052020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1520052020 is about 38987.8445159514. The cubic root of 1520052020 is about 1149.7925322019.

Adding to 1520052020 its reverse (202500251), we get a palindrome (1722552271).

The spelling of 1520052020 in words is "one billion, five hundred twenty million, fifty-two thousand, twenty".