2145255511 has 8 divisors (see below), whose sum is σ = 2452017440. Its totient is φ = 1838567808.

The previous prime is 2145255499. The next prime is 2145255569. The reversal of 2145255511 is 1155525412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2145255511 - 2¹³ = 2145247319 is a prime.

It is a super-2 number, since 2×2145255511² = 9204242414951742242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145255311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74515 + ... + 99211.

It is an arithmetic number, because the mean of its divisors is an integer number (306502180).

Almost surely, 2^2145255511 is an apocalyptic number.

2145255511 is a deficient number, since it is larger than the sum of its proper divisors (306761929).

2145255511 is a wasteful number, since it uses less digits than its factorization.

2145255511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37113.

The product of its digits is 10000, while the sum is 31.

The square root of 2145255511 is about 46316.9030808408. The cubic root of 2145255511 is about 1289.7127960664.

The spelling of 2145255511 in words is "two billion, one hundred forty-five million, two hundred fifty-five thousand, five hundred eleven".