2145405254 has 16 divisors (see below), whose sum is σ = 3404689200. Its totient is φ = 1011082464.

The previous prime is 2145405233. The next prime is 2145405271. The reversal of 2145405254 is 4525045412.

It is a self number, because there is not a number n which added to its sum of digits gives 2145405254.

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, 135809 + ... + 150780.

It is an arithmetic number, because the mean of its divisors is an integer number (212793075).

Almost surely, 2^2145405254 is an apocalyptic number.

2145405254 is a deficient number, since it is larger than the sum of its proper divisors (1259283946).

2145405254 is a wasteful number, since it uses less digits than its factorization.

2145405254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286807.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 2145405254 is about 46318.5195575161. The cubic root of 2145405254 is about 1289.7428035207.

The spelling of 2145405254 in words is "two billion, one hundred forty-five million, four hundred five thousand, two hundred fifty-four".