1506481 has 4 divisors (see below), whose sum is σ = 1510000. Its totient is φ = 1502964.

The previous prime is 1506473. The next prime is 1506487. The reversal of 1506481 is 1846051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1506481 - 2³ = 1506473 is a prime.

It is a super-2 number, since 2×1506481² = 4538970006722, which contains 22 as substring.

It is a Duffinian number.

1506481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1506487) 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 3 ways as a sum of consecutive naturals, for example, 1011 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (377500).

2^1506481 is an apocalyptic number.

It is an amenable number.

1506481 is a deficient number, since it is larger than the sum of its proper divisors (3519).

1506481 is an equidigital number, since it uses as much as digits as its factorization.

1506481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1506481 is about 1227.3878767529. The cubic root of 1506481 is about 114.6360516715.

The spelling of 1506481 in words is "one million, five hundred six thousand, four hundred eighty-one".