61315224 has 16 divisors (see below), whose sum is σ = 153288120. Its totient is φ = 20438400.

The previous prime is 61315207. The next prime is 61315229. The reversal of 61315224 is 42251316.

61315224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2554801 = 61315224 / (6 + 1 + 3 + 1 + 5 + 2 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 61315194 and 61315203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61315229) 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 3 ways as a sum of consecutive naturals, for example, 1277377 + ... + 1277424.

Almost surely, 2^61315224 is an apocalyptic number.

It is an amenable number.

61315224 is an abundant number, since it is smaller than the sum of its proper divisors (91972896).

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

61315224 is a wasteful number, since it uses less digits than its factorization.

61315224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554810 (or 2554806 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 61315224 is about 7830.4038210044. The cubic root of 61315224 is about 394.3266292645.

The spelling of 61315224 in words is "sixty-one million, three hundred fifteen thousand, two hundred twenty-four".