54015540 has 24 divisors (see below), whose sum is σ = 151243680. Its totient is φ = 14404128.

The previous prime is 54015527. The next prime is 54015541. The reversal of 54015540 is 4551045.

It is a super-2 number, since 2×54015540² = 5835357122983200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54015540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54015541) 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, 450070 + ... + 450189.

It is an arithmetic number, because the mean of its divisors is an integer number (6301820).

Almost surely, 2^54015540 is an apocalyptic number.

It is an amenable number.

54015540 is an abundant number, since it is smaller than the sum of its proper divisors (97228140).

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

54015540 is a wasteful number, since it uses less digits than its factorization.

54015540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900271 (or 900269 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 54015540 is about 7349.5265153614. The cubic root of 54015540 is about 378.0125692190.

Adding to 54015540 its reverse (4551045), we get a palindrome (58566585).

The spelling of 54015540 in words is "fifty-four million, fifteen thousand, five hundred forty".