2054540240 has 40 divisors (see below), whose sum is σ = 4795440840. Its totient is φ = 818610176.

The previous prime is 2054540239. The next prime is 2054540261. The reversal of 2054540240 is 420454502.

It can be written as a sum of positive squares in 4 ways, for example, as 151486864 + 1903053376 = 12308^2 + 43624^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2054540240² = 8442271195558515200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29405 + ... + 70524.

It is an arithmetic number, because the mean of its divisors is an integer number (119886021).

Almost surely, 2^2054540240 is an apocalyptic number.

2054540240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2054540240 is an abundant number, since it is smaller than the sum of its proper divisors (2740900600).

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

2054540240 is a wasteful number, since it uses less digits than its factorization.

2054540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100199 (or 100193 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 2054540240 is about 45327.0365234702. The cubic root of 2054540240 is about 1271.2712259341.

Adding to 2054540240 its reverse (420454502), we get a palindrome (2474994742).

The spelling of 2054540240 in words is "two billion, fifty-four million, five hundred forty thousand, two hundred forty".