1516881 has 8 divisors (see below), whose sum is σ = 2042560. Its totient is φ = 1001232.

The previous prime is 1516871. The next prime is 1516883. The reversal of 1516881 is 1886151.

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 1516881 - 2⁶ = 1516817 is a prime.

It is a super-2 number, since 2×1516881² = 4601855936322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

1516881 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516883) 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, 2146 + ... + 2763.

It is an arithmetic number, because the mean of its divisors is an integer number (255320).

2^1516881 is an apocalyptic number.

It is an amenable number.

1516881 is a deficient number, since it is larger than the sum of its proper divisors (525679).

1516881 is a wasteful number, since it uses less digits than its factorization.

1516881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015.

The product of its digits is 1920, while the sum is 30.

The square root of 1516881 is about 1231.6172294995. The cubic root of 1516881 is about 114.8992438223.

The spelling of 1516881 in words is "one million, five hundred sixteen thousand, eight hundred eighty-one".