1521055 has 4 divisors (see below), whose sum is σ = 1825272. Its totient is φ = 1216840.

The previous prime is 1521049. The next prime is 1521067. The reversal of 1521055 is 5501251.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1521055 - 2⁹ = 1520543 is a prime.

It is a Duffinian number.

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, 152101 + ... + 152110.

It is an arithmetic number, because the mean of its divisors is an integer number (456318).

2^1521055 is an apocalyptic number.

1521055 is a deficient number, since it is larger than the sum of its proper divisors (304217).

1521055 is an equidigital number, since it uses as much as digits as its factorization.

1521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304216.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1521055 is about 1233.3105853758. The cubic root of 1521055 is about 115.0045366830.

The spelling of 1521055 in words is "one million, five hundred twenty-one thousand, fifty-five".