55050540 has 48 divisors (see below), whose sum is σ = 156764160. Its totient is φ = 14430400.

The previous prime is 55050521. The next prime is 55050547. The reversal of 55050540 is 4505055.

It is a self number, because there is not a number n which added to its sum of digits gives 55050540.

It is not an unprimeable number, because it can be changed into a prime (55050547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4236 + ... + 11315.

It is an arithmetic number, because the mean of its divisors is an integer number (3265920).

Almost surely, 2^55050540 is an apocalyptic number.

It is an amenable number.

55050540 is an abundant number, since it is smaller than the sum of its proper divisors (101713620).

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

55050540 is a wasteful number, since it uses less digits than its factorization.

55050540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15622 (or 15620 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 55050540 is about 7419.6051107859. The cubic root of 55050540 is about 380.4116960007.

Adding to 55050540 its reverse (4505055), we get a palindrome (59555595).

The spelling of 55050540 in words is "fifty-five million, fifty thousand, five hundred forty".