61280500 has 24 divisors (see below), whose sum is σ = 133837704. Its totient is φ = 24512000.

The previous prime is 61280497. The next prime is 61280503. The reversal of 61280500 is 508216.

It is a happy number.

61280500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61280497) and next prime (61280503).

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 61277584 = 54^2 + 7828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61280503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60781 + ... + 61780.

It is an arithmetic number, because the mean of its divisors is an integer number (5576571).

Almost surely, 2^61280500 is an apocalyptic number.

It is an amenable number.

61280500 is an abundant number, since it is smaller than the sum of its proper divisors (72557204).

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

61280500 is a wasteful number, since it uses less digits than its factorization.

61280500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122580 (or 122568 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 61280500 is about 7828.1862522554. The cubic root of 61280500 is about 394.2521769366.

Adding to 61280500 its reverse (508216), we get a palindrome (61788716).

The spelling of 61280500 in words is "sixty-one million, two hundred eighty thousand, five hundred".