16552537 has 4 divisors (see below), whose sum is σ = 16671760. Its totient is φ = 16433316.

The previous prime is 16552517. The next prime is 16552567. The reversal of 16552537 is 73525561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73525561 = 17 ⋅4325033.

It is a cyclic number.

It is not a de Polignac number, because 16552537 - 2¹⁹ = 16028249 is a prime.

It is a super-2 number, since 2×16552537² = 547972962272738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16552517) 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 3 ways as a sum of consecutive naturals, for example, 59403 + ... + 59680.

It is an arithmetic number, because the mean of its divisors is an integer number (4167940).

Almost surely, 2^16552537 is an apocalyptic number.

It is an amenable number.

16552537 is a deficient number, since it is larger than the sum of its proper divisors (119223).

16552537 is a wasteful number, since it uses less digits than its factorization.

16552537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119222.

The product of its digits is 31500, while the sum is 34.

The square root of 16552537 is about 4068.4809204419. The cubic root of 16552537 is about 254.8520838942.

The spelling of 16552537 in words is "sixteen million, five hundred fifty-two thousand, five hundred thirty-seven".