5145444 has 30 divisors (see below), whose sum is σ = 13452054. Its totient is φ = 1715040.

The previous prime is 5145433. The next prime is 5145463. The reversal of 5145444 is 4445415.

It can be written as a sum of positive squares in only one way, i.e., 5062500 + 82944 = 2250^2 + 288^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 7617 + ... + 8264.

Almost surely, 2^5145444 is an apocalyptic number.

5145444 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5145444 is an abundant number, since it is smaller than the sum of its proper divisors (8306610).

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

5145444 is a wasteful number, since it uses less digits than its factorization.

5145444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15897 (or 15886 counting only the distinct ones).

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

The square root of 5145444 is about 2268.3571147419. The cubic root of 5145444 is about 172.6398110383.

The spelling of 5145444 in words is "five million, one hundred forty-five thousand, four hundred forty-four".