83421155 has 8 divisors (see below), whose sum is σ = 103334784. Its totient is φ = 64584000.

The previous prime is 83421137. The next prime is 83421157. The reversal of 83421155 is 55112438.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83421155 - 2¹⁰ = 83420131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83421157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268946 + ... + 269255.

It is an arithmetic number, because the mean of its divisors is an integer number (12916848).

Almost surely, 2^83421155 is an apocalyptic number.

83421155 is a deficient number, since it is larger than the sum of its proper divisors (19913629).

83421155 is a wasteful number, since it uses less digits than its factorization.

83421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538237.

The product of its digits is 4800, while the sum is 29.

The square root of 83421155 is about 9133.5182158903. The cubic root of 83421155 is about 436.9436170835.

The spelling of 83421155 in words is "eighty-three million, four hundred twenty-one thousand, one hundred fifty-five".