4161520 has 40 divisors (see below), whose sum is σ = 10557360. Its totient is φ = 1512960.

The previous prime is 4161499. The next prime is 4161527. The reversal of 4161520 is 251614.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4161527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485 + ... + 3244.

It is an arithmetic number, because the mean of its divisors is an integer number (263934).

Almost surely, 2^4161520 is an apocalyptic number.

4161520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4161520 is an abundant number, since it is smaller than the sum of its proper divisors (6395840).

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

4161520 is a wasteful number, since it uses less digits than its factorization.

4161520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4753 (or 4747 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 4161520 is about 2039.9803920626. The cubic root of 4161520 is about 160.8486161094.

It can be divided in two parts, 416 and 1520, that added together give a square (1936 = 44²).

The spelling of 4161520 in words is "four million, one hundred sixty-one thousand, five hundred twenty".