1672155 has 12 divisors (see below), whose sum is σ = 2898480. Its totient is φ = 891792.

The previous prime is 1672129. The next prime is 1672199. The reversal of 1672155 is 5512761.

It is not a de Polignac number, because 1672155 - 2⁶ = 1672091 is a prime.

It is a super-2 number, since 2×1672155² = 5592204688050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18535 + ... + 18624.

It is an arithmetic number, because the mean of its divisors is an integer number (241540).

2^1672155 is an apocalyptic number.

1672155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1672155 is a deficient number, since it is larger than the sum of its proper divisors (1226325).

1672155 is a wasteful number, since it uses less digits than its factorization.

1672155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37170 (or 37167 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1672155 is about 1293.1183240524. The cubic root of 1672155 is about 118.6931103310.

Subtracting 1672155 from its reverse (5512761), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 1672155 in words is "one million, six hundred seventy-two thousand, one hundred fifty-five".