1521879 has 8 divisors (see below), whose sum is σ = 2078832. Its totient is φ = 989760.

The previous prime is 1521869. The next prime is 1521893. The reversal of 1521879 is 9781251.

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

It is not a de Polignac number, because 1521879 - 2⁸ = 1521623 is a prime.

It is a super-2 number, since 2×1521879² = 4632231381282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521809) 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 7 ways as a sum of consecutive naturals, for example, 6064 + ... + 6309.

It is an arithmetic number, because the mean of its divisors is an integer number (259854).

2^1521879 is an apocalyptic number.

1521879 is a deficient number, since it is larger than the sum of its proper divisors (556953).

1521879 is a wasteful number, since it uses less digits than its factorization.

1521879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12417.

The product of its digits is 5040, while the sum is 33.

The square root of 1521879 is about 1233.6446003611. The cubic root of 1521879 is about 115.0253000416.

The spelling of 1521879 in words is "one million, five hundred twenty-one thousand, eight hundred seventy-nine".