1540485 has 16 divisors (see below), whose sum is σ = 2738880. Its totient is φ = 821520.

The previous prime is 1540481. The next prime is 1540499. The reversal of 1540485 is 5840451.

It is not a de Polignac number, because 1540485 - 2² = 1540481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540481) 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, 5571 + ... + 5840.

It is an arithmetic number, because the mean of its divisors is an integer number (171180).

2^1540485 is an apocalyptic number.

1540485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540485 is a deficient number, since it is larger than the sum of its proper divisors (1198395).

1540485 is a wasteful number, since it uses less digits than its factorization.

1540485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11425 (or 11419 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1540485 is about 1241.1627612848. The cubic root of 1540485 is about 115.4921566608.

It can be divided in two parts, 1540 and 485, that added together give a square (2025 = 45²).

The spelling of 1540485 in words is "one million, five hundred forty thousand, four hundred eighty-five".