540021250 has 60 divisors (see below), whose sum is σ = 1041543162. Its totient is φ = 209920000.

The previous prime is 540021241. The next prime is 540021259. The reversal of 540021250 is 52120045.

It is an interprime number because it is at equal distance from previous prime (540021241) and next prime (540021259).

It can be written as a sum of positive squares in 15 ways, for example, as 336759201 + 203262049 = 18351^2 + 14257^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540021259) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2101122 + ... + 2101378.

Almost surely, 2^540021250 is an apocalyptic number.

540021250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

540021250 is a deficient number, since it is larger than the sum of its proper divisors (501521912).

540021250 is an equidigital number, since it uses as much as digits as its factorization.

540021250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 305 counting only the distinct ones).

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

The square root of 540021250 is about 23238.3572999470. The cubic root of 540021250 is about 814.3359665744.

Adding to 540021250 its reverse (52120045), we get a palindrome (592141295).

The spelling of 540021250 in words is "five hundred forty million, twenty-one thousand, two hundred fifty".