5155287444 has 30 divisors (see below), whose sum is σ = 13476940554. Its totient is φ = 1718429040.

The previous prime is 5155287391. The next prime is 5155287481. The reversal of 5155287444 is 4447825515.

5155287444 is a `hidden beast` number, since 5 + 15 + 528 + 74 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4316490000 + 838797444 = 65700^2 + 28962^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5155287444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7955367 + ... + 7956014.

Almost surely, 2^5155287444 is an apocalyptic number.

5155287444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5155287444 is an abundant number, since it is smaller than the sum of its proper divisors (8321653110).

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

5155287444 is a wasteful number, since it uses less digits than its factorization.

5155287444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15911397 (or 15911386 counting only the distinct ones).

The product of its digits is 896000, while the sum is 45.

The square root of 5155287444 is about 71800.3303892120. The cubic root of 5155287444 is about 1727.4982990860.

The spelling of 5155287444 in words is "five billion, one hundred fifty-five million, two hundred eighty-seven thousand, four hundred forty-four".