5131378 has 12 divisors (see below), whose sum is σ = 8953902. Its totient is φ = 2199120.

The previous prime is 5131367. The next prime is 5131417. The reversal of 5131378 is 8731315.

It can be written as a sum of positive squares in only one way, i.e., 5049009 + 82369 = 2247^2 + 287^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26083 + ... + 26278.

Almost surely, 2^5131378 is an apocalyptic number.

5131378 is a deficient number, since it is larger than the sum of its proper divisors (3822524).

5131378 is a wasteful number, since it uses less digits than its factorization.

5131378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52377 (or 52370 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 5131378 is about 2265.2545110870. The cubic root of 5131378 is about 172.4823534423.

It can be divided in two parts, 513 and 1378, that added together give a triangular number (1891 = T₆₁).

The spelling of 5131378 in words is "five million, one hundred thirty-one thousand, three hundred seventy-eight".