2540541501531 has 24 divisors (see below), whose sum is σ = 4018159632240. Its totient is φ = 1533998232000.

The previous prime is 2540541501497. The next prime is 2540541501551. The reversal of 2540541501531 is 1351051450452.

2540541501531 is a `hidden beast` number, since 2 + 54 + 0 + 54 + 1 + 501 + 53 + 1 = 666.

It is not a de Polignac number, because 2540541501531 - 2⁶ = 2540541501467 is a prime.

It is a super-2 number, since 2×2540541501531² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2540541501551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47672320 + ... + 47725581.

It is an arithmetic number, because the mean of its divisors is an integer number (167423318010).

Almost surely, 2^{2540541501531} is an apocalyptic number.

2540541501531 is a deficient number, since it is larger than the sum of its proper divisors (1477618130709).

2540541501531 is a wasteful number, since it uses less digits than its factorization.

2540541501531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95398187 (or 95398184 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 2540541501531 its reverse (1351051450452), we get a palindrome (3891592951983).

The spelling of 2540541501531 in words is "two trillion, five hundred forty billion, five hundred forty-one million, five hundred one thousand, five hundred thirty-one".