220251345 has 16 divisors (see below), whose sum is σ = 352812480. Its totient is φ = 117330624.

The previous prime is 220251341. The next prime is 220251347. The reversal of 220251345 is 543152022.

It is not a de Polignac number, because 220251345 - 2² = 220251341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220251341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5511 + ... + 21699.

It is an arithmetic number, because the mean of its divisors is an integer number (22050780).

Almost surely, 2^220251345 is an apocalyptic number.

It is an amenable number.

220251345 is a deficient number, since it is larger than the sum of its proper divisors (132561135).

220251345 is a wasteful number, since it uses less digits than its factorization.

220251345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 220251345 is about 14840.8673937880. The cubic root of 220251345 is about 603.9108834867.

The spelling of 220251345 in words is "two hundred twenty million, two hundred fifty-one thousand, three hundred forty-five".