1520535 has 16 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 804768.

The previous prime is 1520527. The next prime is 1520537. The reversal of 1520535 is 5350251.

It is not a de Polignac number, because 1520535 - 2³ = 1520527 is a prime.

1520535 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2202 + ... + 2808.

It is an arithmetic number, because the mean of its divisors is an integer number (153216).

2^1520535 is an apocalyptic number.

1520535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1520535 is a deficient number, since it is larger than the sum of its proper divisors (930921).

1520535 is a wasteful number, since it uses less digits than its factorization.

1520535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1520535 is about 1233.0997526559. The cubic root of 1520535 is about 114.9914297331.

Adding to 1520535 its reverse (5350251), we get a palindrome (6870786).

It can be divided in two parts, 15 and 20535, that multiplied together give a square (308025 = 555²).

The spelling of 1520535 in words is "one million, five hundred twenty thousand, five hundred thirty-five".