16138550 has 12 divisors (see below), whose sum is σ = 30017796. Its totient is φ = 6455400.

The previous prime is 16138537. The next prime is 16138561. The reversal of 16138550 is 5583161.

16138550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16138550² = 520905592205000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161336 + ... + 161435.

It is an arithmetic number, because the mean of its divisors is an integer number (2501483).

Almost surely, 2^16138550 is an apocalyptic number.

16138550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16138550 is a deficient number, since it is larger than the sum of its proper divisors (13879246).

16138550 is a wasteful number, since it uses less digits than its factorization.

16138550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322783 (or 322778 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 16138550 is about 4017.2814190694. The cubic root of 16138550 is about 252.7094625016.

The spelling of 16138550 in words is "sixteen million, one hundred thirty-eight thousand, five hundred fifty".