361222500 has 60 divisors (see below), whose sum is σ = 1053250352. Its totient is φ = 96324000.

The previous prime is 361222493. The next prime is 361222501. The reversal of 361222500 is 5222163.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (361222501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16582 + ... + 31581.

Almost surely, 2^361222500 is an apocalyptic number.

361222500 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

361222500 is an abundant number, since it is smaller than the sum of its proper divisors (692027852).

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

361222500 is a wasteful number, since it uses less digits than its factorization.

361222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48190 (or 48173 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 361222500 is about 19005.8543612225. The cubic root of 361222500 is about 712.1829922486.

Adding to 361222500 its reverse (5222163), we get a palindrome (366444663).

The spelling of 361222500 in words is "three hundred sixty-one million, two hundred twenty-two thousand, five hundred".