1521849 has 8 divisors (see below), whose sum is σ = 2319040. Its totient is φ = 869616.

The previous prime is 1521809. The next prime is 1521853. The reversal of 1521849 is 9481251.

It is a happy number.

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

It is not a de Polignac number, because 1521849 - 2⁸ = 1521593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1521809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36214 + ... + 36255.

It is an arithmetic number, because the mean of its divisors is an integer number (289880).

2^1521849 is an apocalyptic number.

It is an amenable number.

1521849 is a deficient number, since it is larger than the sum of its proper divisors (797191).

1521849 is an equidigital number, since it uses as much as digits as its factorization.

1521849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72479.

The product of its digits is 2880, while the sum is 30.

The square root of 1521849 is about 1233.6324412077. The cubic root of 1521849 is about 115.0245442256.

The spelling of 1521849 in words is "one million, five hundred twenty-one thousand, eight hundred forty-nine".