1540535 has 4 divisors (see below), whose sum is σ = 1848648. Its totient is φ = 1232424.

The previous prime is 1540499. The next prime is 1540541. The reversal of 1540535 is 5350451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5350451 = 1511 ⋅3541.

It is a cyclic number.

It is not a de Polignac number, because 1540535 - 2¹² = 1536439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154049 + ... + 154058.

It is an arithmetic number, because the mean of its divisors is an integer number (462162).

2^1540535 is an apocalyptic number.

1540535 is a deficient number, since it is larger than the sum of its proper divisors (308113).

1540535 is an equidigital number, since it uses as much as digits as its factorization.

1540535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308112.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1540535 is about 1241.1829035239. The cubic root of 1540535 is about 115.4934061689.

Adding to 1540535 its reverse (5350451), we get a palindrome (6890986).

The spelling of 1540535 in words is "one million, five hundred forty thousand, five hundred thirty-five".