5261540 has 12 divisors (see below), whose sum is σ = 11049276. Its totient is φ = 2104608.

The previous prime is 5261527. The next prime is 5261563. The reversal of 5261540 is 451625.

It can be written as a sum of positive squares in 2 ways, for example, as 630436 + 4631104 = 794^2 + 2152^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131519 + ... + 131558.

It is an arithmetic number, because the mean of its divisors is an integer number (920773).

Almost surely, 2^5261540 is an apocalyptic number.

It is an amenable number.

5261540 is an abundant number, since it is smaller than the sum of its proper divisors (5787736).

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

5261540 is a wasteful number, since it uses less digits than its factorization.

5261540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263086 (or 263084 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5261540 is about 2293.8046996203. The cubic root of 5261540 is about 173.9285830136.

The spelling of 5261540 in words is "five million, two hundred sixty-one thousand, five hundred forty".