4013550 has 60 divisors (see below), whose sum is σ = 11162976. Its totient is φ = 1069200.

The previous prime is 4013543. The next prime is 4013557. The reversal of 4013550 is 553104.

It is an interprime number because it is at equal distance from previous prime (4013543) and next prime (4013557).

It is a super-2 number, since 2×4013550² = 32217167205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013557) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3555 + ... + 4545.

Almost surely, 2^4013550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4013550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5581488).

4013550 is an abundant number, since it is smaller than the sum of its proper divisors (7149426).

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

4013550 is a wasteful number, since it uses less digits than its factorization.

4013550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 4013550 is about 2003.3846360597. The cubic root of 4013550 is about 158.9191472159.

Adding to 4013550 its reverse (553104), we get a palindrome (4566654).

The spelling of 4013550 in words is "four million, thirteen thousand, five hundred fifty".