1672555 has 4 divisors (see below), whose sum is σ = 2007072. Its totient is φ = 1338040.

The previous prime is 1672553. The next prime is 1672603. The reversal of 1672555 is 5552761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5552761 = 17 ⋅326633.

It is not a de Polignac number, because 1672555 - 2¹ = 1672553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167251 + ... + 167260.

It is an arithmetic number, because the mean of its divisors is an integer number (501768).

2^1672555 is an apocalyptic number.

1672555 is a deficient number, since it is larger than the sum of its proper divisors (334517).

1672555 is an equidigital number, since it uses as much as digits as its factorization.

1672555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334516.

The product of its digits is 10500, while the sum is 31.

The square root of 1672555 is about 1293.2729796914. The cubic root of 1672555 is about 118.7025738593.

The spelling of 1672555 in words is "one million, six hundred seventy-two thousand, five hundred fifty-five".