1520481 has 8 divisors (see below), whose sum is σ = 2034304. Its totient is φ = 1010160.

The previous prime is 1520473. The next prime is 1520483. The reversal of 1520481 is 1840251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1520481 - 2³ = 1520473 is a prime.

It is a super-3 number, since 3×1520481³ = 10545428886952333923, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1520483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (254288).

2^1520481 is an apocalyptic number.

It is an amenable number.

1520481 is a deficient number, since it is larger than the sum of its proper divisors (513823).

1520481 is a wasteful number, since it uses less digits than its factorization.

1520481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1520481 is about 1233.0778564227. The cubic root of 1520481 is about 114.9900684555.

The spelling of 1520481 in words is "one million, five hundred twenty thousand, four hundred eighty-one".