1521875 has 12 divisors (see below), whose sum is σ = 1906128. Its totient is φ = 1215000.

The previous prime is 1521869. The next prime is 1521893. The reversal of 1521875 is 5781251.

It is not a de Polignac number, because 1521875 - 2⁴ = 1521859 is a prime.

It is a super-2 number, since 2×1521875² = 4632207031250, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2882 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (158844).

2^1521875 is an apocalyptic number.

1521875 is a deficient number, since it is larger than the sum of its proper divisors (384253).

1521875 is an frugal number, since it uses more digits than its factorization.

1521875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 492 counting only the distinct ones).

The product of its digits is 2800, while the sum is 29.

The square root of 1521875 is about 1233.6429791475. The cubic root of 1521875 is about 115.0251992667.

The spelling of 1521875 in words is "one million, five hundred twenty-one thousand, eight hundred seventy-five".