55280502 has 32 divisors (see below), whose sum is σ = 126812160. Its totient is φ = 17831880.

The previous prime is 55280497. The next prime is 55280503. The reversal of 55280502 is 20508255.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55280503) 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, 14838 + ... + 18185.

It is an arithmetic number, because the mean of its divisors is an integer number (3962880).

Almost surely, 2^55280502 is an apocalyptic number.

55280502 is an abundant number, since it is smaller than the sum of its proper divisors (71531658).

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

55280502 is a wasteful number, since it uses less digits than its factorization.

55280502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33065 (or 33059 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 55280502 is about 7435.0858771100. The cubic root of 55280502 is about 380.9406566387.

Adding to 55280502 its reverse (20508255), we get a palindrome (75788757).

The spelling of 55280502 in words is "fifty-five million, two hundred eighty thousand, five hundred two".