4155550 has 48 divisors (see below), whose sum is σ = 9142272. Its totient is φ = 1375200.

The previous prime is 4155539. The next prime is 4155551. The reversal of 4155550 is 555514.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10659 + ... + 11041.

It is an arithmetic number, because the mean of its divisors is an integer number (190464).

Almost surely, 2^4155550 is an apocalyptic number.

4155550 is an abundant number, since it is smaller than the sum of its proper divisors (4986722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4155550 is a wasteful number, since it uses less digits than its factorization.

4155550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 4155550 is about 2038.5166175433. The cubic root of 4155550 is about 160.7716629934.

The spelling of 4155550 in words is "four million, one hundred fifty-five thousand, five hundred fifty".