16552031 has 4 divisors (see below), whose sum is σ = 16563864. Its totient is φ = 16540200.

The previous prime is 16552027. The next prime is 16552043. The reversal of 16552031 is 13025561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16552031 - 2² = 16552027 is a prime.

It is a super-2 number, since 2×16552031² = 547939460449922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16551988 and 16552006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16552051) 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, 3485 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (4140966).

Almost surely, 2^16552031 is an apocalyptic number.

16552031 is a deficient number, since it is larger than the sum of its proper divisors (11833).

16552031 is a wasteful number, since it uses less digits than its factorization.

16552031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11832.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 16552031 is about 4068.4187345946. The cubic root of 16552031 is about 254.8494869818.

Adding to 16552031 its reverse (13025561), we get a palindrome (29577592).

The spelling of 16552031 in words is "sixteen million, five hundred fifty-two thousand, thirty-one".