220502145 has 32 divisors (see below), whose sum is σ = 362009088. Its totient is φ = 114556928.

The previous prime is 220502123. The next prime is 220502147. The reversal of 220502145 is 541205022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220502145 - 2⁷ = 220502017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220502147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180577 + ... + 181793.

It is an arithmetic number, because the mean of its divisors is an integer number (11312784).

Almost surely, 2^220502145 is an apocalyptic number.

It is an amenable number.

220502145 is a deficient number, since it is larger than the sum of its proper divisors (141506943).

220502145 is a wasteful number, since it uses less digits than its factorization.

220502145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 220502145 is about 14849.3146306488. The cubic root of 220502145 is about 604.1400207881.

Adding to 220502145 its reverse (541205022), we get a palindrome (761707167).

The spelling of 220502145 in words is "two hundred twenty million, five hundred two thousand, one hundred forty-five".