4051540 has 12 divisors (see below), whose sum is σ = 8508276. Its totient is φ = 1620608.

The previous prime is 4051529. The next prime is 4051583. The reversal of 4051540 is 451504.

It can be written as a sum of positive squares in 2 ways, for example, as 1943236 + 2108304 = 1394^2 + 1452^2 .

It is a congruent 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, 101269 + ... + 101308.

It is an arithmetic number, because the mean of its divisors is an integer number (709023).

Almost surely, 2^4051540 is an apocalyptic number.

It is an amenable number.

4051540 is an abundant number, since it is smaller than the sum of its proper divisors (4456736).

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

4051540 is a wasteful number, since it uses less digits than its factorization.

4051540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202586 (or 202584 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4051540 is about 2012.8437594607. The cubic root of 4051540 is about 159.4189864492.

The spelling of 4051540 in words is "four million, fifty-one thousand, five hundred forty".