1520085 has 32 divisors (see below), whose sum is σ = 2875392. Its totient is φ = 671040.

The previous prime is 1520083. The next prime is 1520107. The reversal of 1520085 is 5800251.

It is not a de Polignac number, because 1520085 - 2¹ = 1520083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3022 + ... + 3488.

It is an arithmetic number, because the mean of its divisors is an integer number (89856).

2^1520085 is an apocalyptic number.

1520085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1520085 is a deficient number, since it is larger than the sum of its proper divisors (1355307).

1520085 is a wasteful number, since it uses less digits than its factorization.

1520085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1520085 is about 1232.9172721639. The cubic root of 1520085 is about 114.9800847681.

It can be divided in two parts, 15 and 20085, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 1520085 in words is "one million, five hundred twenty thousand, eighty-five".