16411557 has 4 divisors (see below), whose sum is σ = 21882080. Its totient is φ = 10941036.

The previous prime is 16411543. The next prime is 16411561. The reversal of 16411557 is 75511461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16411557 - 2⁴ = 16411541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16411567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735257 + ... + 2735262.

It is an arithmetic number, because the mean of its divisors is an integer number (5470520).

Almost surely, 2^16411557 is an apocalyptic number.

It is an amenable number.

16411557 is a deficient number, since it is larger than the sum of its proper divisors (5470523).

16411557 is an equidigital number, since it uses as much as digits as its factorization.

16411557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470522.

The product of its digits is 4200, while the sum is 30.

The square root of 16411557 is about 4051.1179938382. The cubic root of 16411557 is about 254.1264844238.

The spelling of 16411557 in words is "sixteen million, four hundred eleven thousand, five hundred fifty-seven".