2222540145 has 48 divisors (see below), whose sum is σ = 4448196480. Its totient is φ = 1005530112.

The previous prime is 2222540141. The next prime is 2222540179. The reversal of 2222540145 is 5410452222.

It is not a de Polignac number, because 2222540145 - 2² = 2222540141 is a prime.

It is a super-2 number, since 2×2222540145² = 9879369392273242050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2222540141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5815 + ... + 66924.

It is an arithmetic number, because the mean of its divisors is an integer number (92670760).

Almost surely, 2^2222540145 is an apocalyptic number.

It is an amenable number.

2222540145 is an abundant number, since it is smaller than the sum of its proper divisors (2225656335).

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

2222540145 is a wasteful number, since it uses less digits than its factorization.

2222540145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72854 (or 72851 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2222540145 is about 47143.8240387858. The cubic root of 2222540145 is about 1305.0181087019.

Adding to 2222540145 its reverse (5410452222), we get a palindrome (7632992367).

The spelling of 2222540145 in words is "two billion, two hundred twenty-two million, five hundred forty thousand, one hundred forty-five".