16512051 has 4 divisors (see below), whose sum is σ = 22016072. Its totient is φ = 11008032.

The previous prime is 16512017. The next prime is 16512059. The reversal of 16512051 is 15021561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15021561 = 3 ⋅5007187.

It is not a de Polignac number, because 16512051 - 2¹³ = 16503859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16512059) 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, 2752006 + ... + 2752011.

It is an arithmetic number, because the mean of its divisors is an integer number (5504018).

Almost surely, 2^16512051 is an apocalyptic number.

16512051 is a deficient number, since it is larger than the sum of its proper divisors (5504021).

16512051 is an equidigital number, since it uses as much as digits as its factorization.

16512051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504020.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 16512051 is about 4063.5023071237. The cubic root of 16512051 is about 254.6441325861.

The spelling of 16512051 in words is "sixteen million, five hundred twelve thousand, fifty-one".