4155705 has 40 divisors (see below), whose sum is σ = 7713024. Its totient is φ = 2138400.

The previous prime is 4155703. The next prime is 4155721. The reversal of 4155705 is 5075514.

It is not a de Polignac number, because 4155705 - 2¹ = 4155703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

4155705 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4155703) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12390 + ... + 12720.

Almost surely, 2^4155705 is an apocalyptic number.

4155705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4155705 is a deficient number, since it is larger than the sum of its proper divisors (3557319).

4155705 is a wasteful number, since it uses less digits than its factorization.

4155705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 4155705 is about 2038.5546350294. The cubic root of 4155705 is about 160.7736618702.

The spelling of 4155705 in words is "four million, one hundred fifty-five thousand, seven hundred five".