54512540 has 48 divisors (see below), whose sum is σ = 123070752. Its totient is φ = 20207616.

The previous prime is 54512537. The next prime is 54512543. The reversal of 54512540 is 4521545.

54512540 = T₁₉ + T₂₀ + ... + T₆₈₈.

It is an interprime number because it is at equal distance from previous prime (54512537) and next prime (54512543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54512543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21584 + ... + 23976.

It is an arithmetic number, because the mean of its divisors is an integer number (2563974).

Almost surely, 2^54512540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54512540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61535376).

54512540 is an abundant number, since it is smaller than the sum of its proper divisors (68558212).

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

54512540 is a wasteful number, since it uses less digits than its factorization.

54512540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 54512540 is about 7383.2607972359. The cubic root of 54512540 is about 379.1684030566.

The spelling of 54512540 in words is "fifty-four million, five hundred twelve thousand, five hundred forty".