16461291 has 16 divisors (see below), whose sum is σ = 27364608. Its totient is φ = 8551200.

The previous prime is 16461259. The next prime is 16461301. The reversal of 16461291 is 19216461.

It is a happy number.

It is not a de Polignac number, because 16461291 - 2⁵ = 16461259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16461251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35400 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (1710288).

Almost surely, 2^16461291 is an apocalyptic number.

16461291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16461291 is a deficient number, since it is larger than the sum of its proper divisors (10903317).

16461291 is a wasteful number, since it uses less digits than its factorization.

16461291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71282.

The product of its digits is 2592, while the sum is 30.

The square root of 16461291 is about 4057.2516559859. The cubic root of 16461291 is about 254.3829293409.

The spelling of 16461291 in words is "sixteen million, four hundred sixty-one thousand, two hundred ninety-one".