2541475640 has 32 divisors (see below), whose sum is σ = 6238168560. Its totient is φ = 924172800.

The previous prime is 2541475633. The next prime is 2541475649. The reversal of 2541475640 is 465741452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2541475594 and 2541475603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541475649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2887601 + ... + 2888480.

Almost surely, 2^2541475640 is an apocalyptic number.

2541475640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2541475640 is an abundant number, since it is smaller than the sum of its proper divisors (3696692920).

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

2541475640 is a wasteful number, since it uses less digits than its factorization.

2541475640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5776103 (or 5776099 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 2541475640 is about 50413.0502945418. The cubic root of 2541475640 is about 1364.6731612468.

The spelling of 2541475640 in words is "two billion, five hundred forty-one million, four hundred seventy-five thousand, six hundred forty".