361520 has 20 divisors (see below), whose sum is σ = 840720. Its totient is φ = 144576.

The previous prime is 361511. The next prime is 361523. The reversal of 361520 is 25163.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (361523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (42036).

2³⁶¹⁵²⁰ is an apocalyptic number.

It is an amenable number.

361520 is an abundant number, since it is smaller than the sum of its proper divisors (479200).

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

361520 is a wasteful number, since it uses less digits than its factorization.

361520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 4526 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 361520 is about 601.2653324448. The cubic root of 361520 is about 71.2378454695.

Adding to 361520 its reverse (25163), we get a palindrome (386683).

The spelling of 361520 in words is "three hundred sixty-one thousand, five hundred twenty".