54131540 has 12 divisors (see below), whose sum is σ = 113676276. Its totient is φ = 21652608.

The previous prime is 54131531. The next prime is 54131557. The reversal of 54131540 is 4513145.

It can be written as a sum of positive squares in 2 ways, for example, as 22905796 + 31225744 = 4786^2 + 5588^2 .

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, 1353269 + ... + 1353308.

It is an arithmetic number, because the mean of its divisors is an integer number (9473023).

Almost surely, 2^54131540 is an apocalyptic number.

It is an amenable number.

54131540 is an abundant number, since it is smaller than the sum of its proper divisors (59544736).

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

54131540 is a wasteful number, since it uses less digits than its factorization.

54131540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706586 (or 2706584 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 54131540 is about 7357.4139478488. The cubic root of 54131540 is about 378.2829735389.

Adding to 54131540 its reverse (4513145), we get a palindrome (58644685).

The spelling of 54131540 in words is "fifty-four million, one hundred thirty-one thousand, five hundred forty".