61542224 has 10 divisors (see below), whose sum is σ = 119238090. Its totient is φ = 30771104.

The previous prime is 61542199. The next prime is 61542233. The reversal of 61542224 is 42224516.

61542224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32035600 + 29506624 = 5660^2 + 5432^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61542193 and 61542202.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1923179 + ... + 1923210.

It is an arithmetic number, because the mean of its divisors is an integer number (11923809).

Almost surely, 2^61542224 is an apocalyptic number.

It is an amenable number.

61542224 is a deficient number, since it is larger than the sum of its proper divisors (57695866).

61542224 is a wasteful number, since it uses less digits than its factorization.

61542224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846397 (or 3846391 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 61542224 is about 7844.8852126720. The cubic root of 61542224 is about 394.8126527036.

The spelling of 61542224 in words is "sixty-one million, five hundred forty-two thousand, two hundred twenty-four".