16242555 has 16 divisors (see below), whose sum is σ = 29700864. Its totient is φ = 7425120.

The previous prime is 16242533. The next prime is 16242557. The reversal of 16242555 is 55524261.

It is not a de Polignac number, because 16242555 - 2⁶ = 16242491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16242557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77241 + ... + 77450.

It is an arithmetic number, because the mean of its divisors is an integer number (1856304).

Almost surely, 2^16242555 is an apocalyptic number.

16242555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16242555 is a deficient number, since it is larger than the sum of its proper divisors (13458309).

16242555 is a wasteful number, since it uses less digits than its factorization.

16242555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154706.

The product of its digits is 12000, while the sum is 30.

The square root of 16242555 is about 4030.2053297568. The cubic root of 16242555 is about 253.2511631396.

The spelling of 16242555 in words is "sixteen million, two hundred forty-two thousand, five hundred fifty-five".