2145144455 has 8 divisors (see below), whose sum is σ = 2580290304. Its totient is φ = 1712037600.

The previous prime is 2145144383. The next prime is 2145144461. The reversal of 2145144455 is 5544415412.

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

It is not a de Polignac number, because 2145144455 - 2²² = 2140950151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507431 + ... + 511640.

It is an arithmetic number, because the mean of its divisors is an integer number (322536288).

Almost surely, 2^2145144455 is an apocalyptic number.

2145144455 is a deficient number, since it is larger than the sum of its proper divisors (435145849).

2145144455 is a wasteful number, since it uses less digits than its factorization.

2145144455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019497.

The product of its digits is 64000, while the sum is 35.

The square root of 2145144455 is about 46315.7041941500. The cubic root of 2145144455 is about 1289.6905403157.

Adding to 2145144455 its reverse (5544415412), we get a palindrome (7689559867).

The spelling of 2145144455 in words is "two billion, one hundred forty-five million, one hundred forty-four thousand, four hundred fifty-five".