61544242 has 8 divisors (see below), whose sum is σ = 93829932. Its totient is φ = 30267600.

The previous prime is 61544237. The next prime is 61544279. The reversal of 61544242 is 24244516.

It can be written as a sum of positive squares in 2 ways, for example, as 61293241 + 251001 = 7829^2 + 501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61544242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252109 + ... + 252352.

Almost surely, 2^61544242 is an apocalyptic number.

61544242 is a deficient number, since it is larger than the sum of its proper divisors (32285690).

61544242 is a wasteful number, since it uses less digits than its factorization.

61544242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504524.

The product of its digits is 7680, while the sum is 28.

The square root of 61544242 is about 7845.0138304531. The cubic root of 61544242 is about 394.8169680239.

Adding to 61544242 its reverse (24244516), we get a palindrome (85788758).

The spelling of 61544242 in words is "sixty-one million, five hundred forty-four thousand, two hundred forty-two".